'The world must unite': Barack Obama addresses Brussels attacks during Cuba speech

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President Obama Addresses Brussels Attacks

US President Barack Obama said "the world must unite" after Tuesday's terror attacks in Brussels killed 34 people.

Obama, speaking from Havana, Cuba, said he condemned "these outrageous attacks," and added that the US will do "whatever is necessary" to bring the Belgium attackers to justice.

SEE ALSO: Presidential candidates condemn Brussels attacks

"This is another reminder that the world must unite, we must be together, regardless of nationality, or race, or faith, in fighting against the scourge of terrorism," he said.

"We can and we will defeat those that threaten the safety and security of people all around the world," Obama continued.

RELATED GALLERY: The world reacts to terror attacks in Brussels

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World reacts to Brussels attacks -- tributes, memorials
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'The world must unite': Barack Obama addresses Brussels attacks during Cuba speech
TOPSHOT - A Belgian flag is display on the Trevi Fountain in Rome on March 22, 2016 in tribute to the victims of Brussels following triple bomb attacks in the Belgian capital that killed about 35 people and left more than 200 people wounded. Belgium launched a huge manhunt on March 22 after a series of bombings claimed by the Islamic State group ripped through Brussels airport and a metro train, killing around 35 people in the latest attack to bring carnage to the heart of Europe. / AFP / GABRIEL BOUYS (Photo credit should read GABRIEL BOUYS/AFP/Getty Images)
The Eiffel Tower is illuminated with the Belgium national colors black, yellow and red in honor of the victims of the today's attacks at the airport and the metro station in Brussels, in Paris, Tuesday, March 22, 2016. Explosions, at least one likely caused by a suicide bomber, rocked the Brussels airport and its subway system Tuesday, prompting a lockdown of the Belgian capital and heightened security across Europe. (AP Photo/Thibault Camus)
The full moon rises behind One World Trade Center on March 22, 2016 in New York, it's mast displaying the colors of the Belgian flag in a show of support following the terrorist attacks in Brussels. / AFP / TREVOR COLLENS (Photo credit should read TREVOR COLLENS/AFP/Getty Images)
A picture taken on March 22, 2016 shows the Belgian flag projected on the European Union Commission building in tribute to the victims of Brussels following triple bomb attacks in the Belgian capital that killed about 35 people and left more than 200 people wounded. Belgium launched a huge manhunt on March 22 after a series of bombings claimed by the Islamic State group ripped through Brussels airport and a metro train, killing around 35 people in the latest attack to bring carnage to the heart of Europe. / AFP / PHILIPPE HUGUEN (Photo credit should read PHILIPPE HUGUEN/AFP/Getty Images)
A picture taken on March 22, 2016, shows the town council building in Belgrade illuminated in the colours of the Belgian flag in tribute to the victims of Brussels following attacks in the Belgian capital that killed about 35 people and left more than 200 people wounded. / AFP / Oksana Toskic / Serbia OUT (Photo credit should read OKSANA TOSKIC/AFP/Getty Images)
PARIS, FRANCE - MARCH 22: French people gather in front of the Hotel de Ville to show solidarity with Belgians during a commemoration, held with the attendance of French Minister of Foreign Affairs Jean Marc Ayrault, Belgium Ambassador to Paris Vincent Mertens de Wilmars and Mayor of Paris, Anne Hidalgo in Paris, France on March 22, 2016. At least 34 people were killed and more than 100 injured in multiple terrorist attacks at an airport and metro station in Brussels on today's morning. (Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
(COMBO) This combination of pictures created on March 22, 2016 shows colours of the Belgian flag being projected on to (from top L) the Brandenburg Gate in Berlin, the Eiffel Tower in Paris, the town council building in Belgrade, the Trevi Fountain in Rome, the Royal Palace at Dam Square in Amsterdam and Rome's Campidoglio in tribute to the victims of Brussels following the triple bomb attacks that killed about 35 people and left more than 200 people wounded. / AFP / AFP AND ANP / Serbia OUT - Netherlands OUT (Photo credit should read ODD ANDERSEN,LIONEL BONAVENTURE,OKSANA TOSKIC,GABRIEL BOUYS,EVERT ELZINGA,FILIPPO MONTEFORTE/AFP/Getty Images)
TOPSHOT - A couple embraces as the colors of the Belgian flag are projected on to the Brandenburg Gate in Berlin as the German capital shows its solidarity following the Brussels attacks on March 22, 2016. Security was tightened across Europe and transport links paralysed after a series of apparently coordinated explosions ripped through Brussels airport and a metro train, killing at least 34 people. / AFP / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)
A picture taken on March 22, 2016 shows the Eiffel Tower in Paris illuminated in colours of the Belgian flag in tribute to the victims of terrorist attacks in Brussels. Around 35 people were killed and more than 200 wounded in a series of attacks in Brussels today claimed by the Islamic State group and described as a strike at the very heart of Europe. AFP PHOTO / LIONEL BONAVENTURE / AFP / LIONEL BONAVENTURE (Photo credit should read LIONEL BONAVENTURE/AFP/Getty Images)
PARIS, FRANCE - MARCH 22: (FRANCE OUT) Flags are hung on the Hotel de Ville to pay tribute to the victims of the terrorists attacks in Belgium on March 22, 2016 in Paris, France. At least 31 people are thought to have been killed after Brussels airport and a Metro station were targeted by explosions. The attacks come just days after a key suspect in the Paris attacks, Salah Abdeslam, was captured in Brussels. (Photo by Nicolas Kovarik/IP3/Getty Images)
LONDON, ENGLAND - MARCH 22: The Belgian national flag is raised as a mark of respect at Downing Street on March 22, 2016 in London, England. At least 34 people are thought to have been killed after Brussels airport and a Metro station were targeted by explosions. The attacks come just days after a key suspect in the Paris attacks, Salah Abdeslam, was captured in Brussels. (Photo by Ben Pruchnie/Getty Images)
TORONTO, ON- MARCH 22: Magali Labe from Belgium holds for a moment of silence at a vigil. The Toronto Sign outside City Hall sports black-yellow-red of Belgium in symapathy of those killed and injured in Brussels earlier in the day. at City Hall in Toronto. March 22, 2016. (Steve Russell/Toronto Star via Getty Images)
TORONTO, ON- MARCH 22: The Toronto Sign outside City Hall sports black-yellow-red of Belgium in symapathy of those killed and injured in Brussels earlier in the day. at City Hall in Toronto. March 22, 2016. (Steve Russell/Toronto Star via Getty Images)
ISTANBUL, TURKEY - MARCH 22: Belgian Consul to Istanbul Henri Marc Jose Vantieghem, US Consul to Istanbul Charles Frederick Hunter, Israel's Consul to Istanbul Shai Cohen, Mayors of Istanbul's Districts Beyoglu, Fatih, Esenler and Turkey's ruling party Justice and Development Party's (AK Party) Provincial members walks during a protest, condemning terrorism on March 22, 2016 in Istanbul, Turkey. Four people were killed and 36 injured, 7 of them seriously, in Saturdays suicide bomb blast on Istanbuls Istiklal Street. Also, at least 34 people were killed and more than 100 injured in multiple explosions at an airport and metro station in Brussels on today's morning. Metro stations were closed and flights to Zaventem airport diverted while the Eurostar rail service was also cancelled into and out of Brussels. (Photo by Islam Yakut/Anadolu Agency/Getty Images)
PARIS, FRANCE - MARCH 22: French people leave flowers to pay respect to Belgium after Brussels Terror attack, at the Belgian Embassy in Paris, France on March 22, 2016. (Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
PARIS, FRANCE - MARCH 22: French people leave French flag and flowers to pay respect to Belgium after Brussels Terror attack, at the Belgian Embassy in Paris, France on March 22, 2016. (Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
PARIS, FRANCE - MARCH 22: French people leave flowers to pay respect to Belgium after Brussels Terror attack, at the Belgian Embassy in Paris, France on March 22, 2016. (Photo by Geoffroy Van der Hasselt/Anadolu Agency/Getty Images)
UNITED STATES - MARCH 22 - Flowers are let below the Belgium flag as it flies at half staff at the Belgium Embassy in Washington D.C., Tuesday, March 22, 2016, after the terror attacks in Brussels, Belgium, earlier today. (Photo By Al Drago/CQ Roll Call)
UNITED STATES - MARCH 22 - Flowers are let below the Belgium flag as it flies at half staff at the Belgium Embassy in Washington D.C., Tuesday, March 22, 2016, after the terror attacks in Brussels, Belgium, earlier today. (Photo By Al Drago/CQ Roll Call)
Flowers wrapped in ribbons in the colours of the Belgium national flag, are placed outside the Belgium Embassy in Moscow, Russia on Tuesday, March 22, 2016. Authorities in Europe have tightened security at airports, on subways, at the borders and on city streets after deadly attacks Tuesday on the Brussels airport and its subway system. (AP Photo/ Pavel Golovkin)
Activists of Pakistani civil society chant slogans during a rally to condemn the Brussels attack, in Multan, Pakistan, Tuesday, March 22, 2016. Explosions, at least one likely caused by a suicide bomber, rocked the Brussels airport and subway system Tuesday, prompting a lock down of the Belgian capital and heightened security across Europe. Placard at left reads, "we want peace in the world." (AP Photo/Asim Tanveer)
People hold hands as they gather at a makeshift memorial at Place de la Bourse (Beursplein) following attacks in Brussels on March 22, 2016. Airlines cancelled hundreds of flights and European railways froze links with Brussels after a series of bomb blasts killed around 35 people in the city's airport and a metro train, sparking a broad security response. AFP PHOTO / KENZO TRIBOUILLARD / AFP / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
A picture taken on March 22, 2016 in Paris shows a view of a smartphone screening an Instagram page with the ashtag '#JESUISBRUSSELS' (#IAMBRUSSELS) and two tributes images picturing the color of the Belgian flag, a drawing by French cartoonist Plantu and the famous Belgian comic character Tintin, in tribute to victims of triple bomb attacks in the Belgian capital that killed about 35 people. Airlines cancelled hundreds of flights and European railways froze links with Brussels on March 22, 2016 after rush-hour bomb attacks killed around 35 people in the city's airport and a metro train, sparking a broad security response. Within hours of Brussels attacks tens of thousands of people were sharing images on social media of Herge's cub reporter Tintin, the country's most famous creation, in tears. / AFP / JOEL SAGET / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION (Photo credit should read JOEL SAGET/AFP/Getty Images)
A picture taken on March 22, 2016 in Paris shows a view of a smartphone screening an Instagram page with the ashtag '#JESUISBRUSSELS' (#IAMBRUSSELS) and various tributes images picturing the Belgian flag, a drawing by French cartoonist Plantu or the famous Belgian comic character Tintin in tribute to victims of triple bomb attacks in the Belgian capital that killed about 35 people. Airlines cancelled hundreds of flights and European railways froze links with Brussels on March 22, 2016 after rush-hour bomb attacks killed around 35 people in the city's airport and a metro train, sparking a broad security response. Within hours of Brussels attacks tens of thousands of people were sharing images on social media of Herge's cub reporter Tintin, the country's most famous creation, in tears. / AFP / JOEL SAGET / RESTRICTED TO EDITORIAL USE - MANDATORY MENTION OF THE ARTIST UPON PUBLICATION - TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION (Photo credit should read JOEL SAGET/AFP/Getty Images)
Tributes to the victims of the terror attacks in Brussels are seen inside the Belgian Embassy in central London on March 22, 2016. Security was tightened across Europe and transport links paralysed after a series of apparently coordinated explosions ripped through Brussels airport and a metro train, killing at least 35 people. / AFP / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
People hold hands as they gather at a makeshift memorial at Place de la Bourse (Beursplein) following attacks in Brussels on March 22, 2016. Airlines cancelled hundreds of flights and European railways froze links with Brussels after a series of bomb blasts killed around 35 people in the city's airport and a metro train, sparking a broad security response. AFP PHOTO / KENZO TRIBOUILLARD / AFP / KENZO TRIBOUILLARD (Photo credit should read KENZO TRIBOUILLARD/AFP/Getty Images)
MOSCOW, RUSSIA.MARCH 22, 2016. People bring flowers to the Belgian Embassy in Moscow to pay tribute to the Brussels terror attacks victims. On March 22, 2016, two explosions rocked Zaventem Airport and one blast struck a metro station. Mikhail Japaridze/TASS (Photo by Mikhail Japaridze\TASS via Getty Images)
A boy holds a placard expressing sympathy for the victims of the terror attacks in Brussels during a protest at a makeshift camp at the Greek-Macedonian border near the village of Idomeni on March 22, 2016. Greece will not be able to start sending refugees back to Turkey from March 20, 2016, the government said, as the country struggles to implement a key deal aimed at easing Europe's migrant crisis. The numbers are daunting: officials said as of Saturday there were 47,500 migrants in Greece, including 8,200 on the islands and 10,500 massed at the Idomeni camp on the Macedonian border. / AFP / ANDREJ ISAKOVIC (Photo credit should read ANDREJ ISAKOVIC/AFP/Getty Images)
After attacks in Brussels, a candle wrapped in a ribbon in the colors of the Belgium national flag and flowers are placed on a table inside the Belgium Embassy in Berlin, Germany, Tuesday, March 22, 2016. (AP Photo/Markus Schreiber)
Flowers are placed outside the embassy of Belgium, in Moscow, Russia, Tuesday, March 22, 2016. Authorities in Europe have tightened security at airports, on subways, at the borders and on city streets after deadly attacks Tuesday on the Brussels airport and its subway system. (AP Photo/Pavel Golovkin)
After deadly attacks on the Brussels airport and its subway system, a boy places a candle in front of the Belgian Embassy in Berlin, Germany, Tuesday, March 22, 2016. (AP Photo/Markus Schreiber)
MOSCOW, RUSSIA.MARCH 22, 2016. People bring flowers to the Belgian Embassy in Moscow to pay tribute to the Brussels terror attacks victims. On March 22, 2016, two explosions rocked Zaventem Airport and one blast struck a metro station. Mikhail Japaridze/TASS (Photo by Mikhail Japaridze\TASS via Getty Images)
MOSCOW, RUSSIA.MARCH 22, 2016. People bring flowers to the Belgian Embassy in Moscow to pay tribute to the Brussels terror attacks victims. On March 22, 2016, two explosions rocked Zaventem Airport and one blast struck a metro station. Alexander Shcherbak/TASS (Photo by Alexander Shcherbak\TASS via Getty Images)
A man lights a candle where flowers have being laid outside the Belgian embassy in Berlin on March 22, 2016. Security was tightened across Europe and transport links paralysed after a series of apparently coordinated explosions ripped through Brussels airport and a metro train, killing at least 34 people. / AFP / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)
A wreath is layed on a table along flowers and a candle inside the Belgium embassy in Berlin on March 22, 2016 as the national and EU flag is reflected in the window. People left tributes to the victims outside the embassy after a series of apparently coordinated blasts ripped through Brussels airport and a train. / AFP / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)
A man looks at flowers and a sign reading (Defy terror, protect freedom) outside the Belgium embassy in Berlin on March 22, 2016. People left tributes to the victims outside the embassy after a series of apparently coordinated blasts ripped through Brussels airport and a train. / AFP / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)
MOSCOW, RUSSIA.MARCH 22, 2016. People bring flowers to the Belgian Embassy in Moscow to pay tribute to the Brussels terror attacks victims. On March 22, 2016, two explosions rocked Zaventem Airport and one blast struck a metro station. Alexander Shcherbak/TASS (Photo by Alexander Shcherbak\TASS via Getty Images)
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Obama spoke with Belgian Prime Minister Charles Michel by phone earlier Tuesday, according to a White House release.

In addition to at least 34 people who died in the attacks, which consisted of multiple explosions at a Brussels airport and metro station and more than 100 were reported injured. Belgium's federal prosecutor said the explosion at the airport was the result of a suicide bombing.

"What we feared has happened, we were hit by blind attacks," Belgian Prime Minister Charles Michel said at a news conference. "We know there are many dead, many injured."

The French government called the attacks "acts of war" in Europe. A November terror attack in Paris killed more than 100 people.

"We are at war, and have endured for many months now, acts of war in Europe," France's Prime Minister Manuel Valls said, according to Le Figaro.

The explosions at the airport occured near an American Airlines check-in desk right around 8 a.m. local time according to Sky News. Roughly one hour later, an explosion was reported in the Maelbeek metro station in Brussels. The station is located near the European Council and European Parliament buildings in Belgium's government district.

"Terrorists struck Brussels but it was Europe that was targeted," French President François Hollande said per the Associated Press.

The attacks happened just four days after police in Brussels captured Salah Abdeslam, the main remaining suspect from the Paris attacks in November that killed more than 100.

Barbara Tasch contributed reporting.

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