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.
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"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.
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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."
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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.