Rex Tillerson: US to hold accountable those who commit crimes against 'innocents'

LUCCA, Italy, April 10 (Reuters) - The United States will hold responsible anyone who commits crimes against humanity, Secretary of State Rex Tillerson said on Monday, days after the U.S. military unexpectedly attacked Syria.

Tillerson is in Italy for a meeting of foreign ministers from the Group of Seven (G7) major industrialized nations, with his counterparts from Europe and Japan eager for clarity from Washington on numerous diplomatic issues, especially Syria.

Before the April 7 missile strikes on a Syrian airbase, U.S. President Donald Trump had indicated he would be less interventionist than his predecessors and willing to overlook human rights abuses if it was in U.S. interests.

RELATED: A look at the Syria gas attack

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ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH A man carries the body of a dead child, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017. REUTERS/Ammar Abdullah
ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH People stand near a dead body, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017. REUTERS/Ammar Abdullah
A man breathes through an oxygen mask as another one receives treatments, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017. REUTERS/Ammar Abdullah
A man breathes through an oxygen mask, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017. REUTERS/Ammar Abdullah
ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH Men stand near dead bodies, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017. REUTERS/Ammar Abdullah
EDITORS NOTE: Graphic content / A Syrian child receives treatment at a hospital in Khan Sheikhun, a rebel-held town in the northwestern Syrian Idlib province, following an attack on April 4, 2017. A suspected chemical attack killed at least 58 civilians including several children in rebel-held northwestern Syria, a monitor said, with the opposition accusing the government and demanding a UN investigation. / AFP PHOTO / Omar haj kadour (Photo credit should read OMAR HAJ KADOUR/AFP/Getty Images)
A man holds an injured baby inside a Turkish ambulance as injured Syrian people enter into Turkey from the Cilvegozu border gate in Hatay province, near the Syrian border on April 4, 2017. Turkish President Recep Tayyip Erdogan in a phone call with Russian counterpart Vladimir Putin on April 4, 2017 condemned a suspected chemical attack in northwestern Syria as an 'inhuman' strike that could endanger peace talks based in the Kazakh capital. / AFP PHOTO / DOGAN NEWS AGENCY / - / Turkey OUT (Photo credit should read -/AFP/Getty Images)
IDLIB, SYRIA - APRIL 4: A wounded kid receives medical treatment at sahra hospital after Assad Regime forces's attack with chlorine gas to Khan Shaykhun town of Idlib, Syria on April 4, 2017. (Photo by Abdulghani Arian/Anadolu Agency/Getty Images)
IDLIB, SYRIA - APRIL 4: A woman gets treatment at a hospital after Assad Regime forces attacked with suspected chlorine gas to Khan Shaykhun town of Idlib, Syria on April 4, 2017. (Photo by Bahjat Najar/Anadolu Agency/Getty Images)
IDLIB, SYRIA - APRIL 4: A child gets treatment at a hospital after Assad Regime forces attacked with suspected chlorine gas to Khan Shaykhun town of Idlib, Syria on April 4, 2017. (Photo by Bahjat Najar/Anadolu Agency/Getty Images)
ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH A man carries the body of a dead child, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017. REUTERS/Ammar Abdullah TPX IMAGES OF THE DAY
A crater is seen at the site of an airstrike, after what rescue workers described as a suspected gas attack in the town of Khan Sheikhoun in rebel-held Idlib, Syria April 4, 2017. REUTERS/Ammar Abdullah TPX IMAGES OF THE DAY
Turkish officials with chemical clothes carry a injured man on April 4, 2017 in Hatay province, near the Syrian border. Turkish President Recep Tayyip Erdogan in a phone call with Russian counterpart Vladimir Putin on April 4, 2017 condemned a suspected chemical attack in northwestern Syria as an 'inhuman' strike that could endanger peace talks based in the Kazakh capital. / AFP PHOTO / DOGAN NEWS AGENCY / - / Turkey OUT (Photo credit should read -/AFP/Getty Images)
EDITORS NOTE: Graphic content / Bodies lie in the parking area of a hospital in Khan Sheikhun, a rebel-held town in the northwestern Syrian Idlib province, following a suspected toxic gas attack on April 4, 2017. A suspected chemical attack killed at least 58 civilians including several children in rebel-held northwestern Syria, a monitor said, with the opposition accusing the government and demanding a UN investigation. / AFP PHOTO / Omar haj kadour (Photo credit should read OMAR HAJ KADOUR/AFP/Getty Images)
IDLIB, SYRIA - APRIL 4: A child gets treatment at a hospital after Assad Regime forces attacked with suspected chlorine gas to Khan Shaykhun town of Idlib, Syria on April 4, 2017. (Photo by Bahjat Najar/Anadolu Agency/Getty Images)
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But Tillerson said the United States would not let such crimes go unchallenged. "We rededicate ourselves to holding to account any and all who commit crimes against the innocents anywhere in the world," he told reporters while commemorating a 1944 German Nazi massacre in Sant'Anna di Stazzema.

Trump ordered his military to strike Syria in retaliation for what the United States said was a chemical weapons attack by President Bashar al-Assad's forces which killed scores of civilians, including many children.

European ministers are eager to hear whether Washington is now committed to overthrowing Assad, who is backed by Russia. They also want the United States to put pressure on Moscow to distance itself from Assad.

Tillerson, who travels to Russia after the two-day G7 gathering, said at the weekend that the defeat of Islamic State remained the U.S. priority, while the U.S. Ambassador to the United Nations Nikki Haley said that "regime change" in Syria was also a priority for Trump.

SEE ALSO: Russia threatens 'real war' with US in Syria as Boris Johnson calls for increased sanctions

The mixed messages have confused and frustrated European allies, who are eager for full U.S. support for a political solution based on a transfer of power in Damascus.

"The Americans say they agree, but there's nothing to show for it behind (the scenes). They are absent from this and are navigating aimlessly in the dark," said a senior European diplomat, who declined to be named.

Italy, Germany, France and Britain have invited foreign ministers from Turkey, Saudi Arabia, United Arab Emirates, Jordan and Qatar to sit down with the G7 group on Tuesday morning to discuss Syria. All oppose Assad's rule.

SENSITIVE ISSUES

The foreign ministers' discussions in Tuscany will prepare the way for a leaders' summit in Sicily at the end of May.

Efforts to reach an agreement on statements ahead of time - a normal part of pre-meeting G7 diplomacy - have moved very slowly, partly because of a difficult transition at the U.S. state department, where many key positions remain unfilled.

Some issues, such as trade and climate change, are likely to be ducked this week. "The more complicated subjects will be left to the leaders," said an Italian diplomat, who declined to be named because he was not authorized to speak to the press.

However, the foreign ministers will talk about growing tensions with North Korea, as the United States moves a navy strike group near the Korean peninsula amid concerns over Pyongyang's nuclear ambitions.

RELATED: US airstrikes in Syria -- launches and impact

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US airstrikes in Syria -- launches and impact

U.S. Navy guided-missile destroyer USS Ross (DDG 71) fires a tomahawk land attack missile in Mediterranean Sea on April 7, 2017.

(Robert S. Price/Courtesy U.S. Navy/Handout via REUTERS)

Battle damage assessment image of Shayrat Airfield, Syria, is seen in this DigitalGlobe satellite image, released by the Pentagon following U.S. Tomahawk Land Attack Missile strikes from Arleigh Burke-class guided-missile destroyers, the USS Ross and USS Porter on April 7, 2017.

(DigitalGlobe/Courtesy U.S. Department of Defense/Handout via REUTERS)

U.S. Navy guided-missile destroyer USS Ross (DDG 71) fires a tomahawk land attack missile in Mediterranean Sea on April 7, 2017.

(Robert S. Price/Courtesy U.S. Navy/Handout via REUTERS)

Shayrat Airfield in Homs, Syria is seen in this DigitalGlobe satellite image released by the U.S. Defense Department on April 6, 2017 after announcing U.S. forces conducted a cruise missile strike against the Syrian Air Force airfield. DigitalGlobe/Courtesy U.S. Department of Defense/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY. NO RESALES. NO ARCHIVE. MANDATORY CREDIT.

U.S. Navy guided-missile destroyer USS Ross (DDG 71) fires a tomahawk land attack missile in Mediterranean Sea on April 7, 2017.

(Robert S. Price/Courtesy U.S. Navy/Handout via REUTERS)

U.S. Navy guided-missile destroyer USS Ross (DDG 71) fires a tomahawk land attack missile in Mediterranean Sea on April 7, 2017.

(Robert S. Price/Courtesy U.S. Navy/Handout via REUTERS)

Shayrat Airfield in Homs, Syria is seen in this DigitalGlobe satellite image on February 18, 2017 and released by the U.S. Defense Department on April 6, 2017 after announcing U.S. forces conducted a cruise missile strike against the Syrian Air Force airfield. 

(DigitalGlobe/Courtesy U.S. Department of Defense/Handout via REUTERS)

U.S. Navy guided-missile destroyer USS Porter (DDG 78) conducts strike operations while in the Mediterranean Sea which U.S. Defense Department said was a part of cruise missile strike against Syria on April 7, 2017.

(Ford Williams/Courtesy U.S. Navy/Handout via REUTERS)

U.S. Navy guided-missile destroyer USS Porter (DDG 78) conducts strike operations while in the Mediterranean Sea, April 7, 2017. Porter, forward-deployed to Rota, Spain, is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe.

(U.S. Navy photo by Mass Communication Specialist 3rd Class Ford Williams/Released)

Battle damage assessment image of Shayrat Airfield, Syria, is seen in this DigitalGlobe satellite image, released by the Pentagon following U.S. Tomahawk Land Attack Missile strikes from Arleigh Burke-class guided-missile destroyers, the USS Ross and USS Porter on April 7, 2017. 

(DigitalGlobe/Courtesy U.S. Department of Defense/Handout via REUTERS)

U.S. Navy guided-missile destroyer USS Porter (DDG 78) conducts strike operations while in the Mediterranean Sea which U.S. Defense Department said was a part of cruise missile strike against Syria on April 7, 2017.

(Ford Williams/Courtesy U.S. Navy/Handout via REUTER)

U.S. Navy guided-missile destroyer USS Porter (DDG 78) conducts strike operations while in the Mediterranean Sea which U.S. Defense Department said was a part of cruise missile strike against Syria on April 7, 2017.

(Ford Williams/Courtesy U.S. Navy/Handout via REUTERS)

Battle damage assessment image of Shayrat Airfield, Syria, is seen in this DigitalGlobe satellite image, released by the Pentagon following U.S. Tomahawk Land Attack Missile strikes from Arleigh Burke-class guided-missile destroyers, the USS Ross and USS Porter on April 7, 2017. 

(DigitalGlobe/Courtesy U.S. Department of Defense/Handout via REUTERS)

U.S. Navy guided-missile destroyer USS Porter (DDG 78) conducts strike operations while in the Mediterranean Sea which U.S. Defense Department said was a part of cruise missile strike against Syria on April 7, 2017.

(Ford Williams/Courtesy U.S. Navy/Handout via REUTERS)

Syrian shepherds tend their flock near the damaged Shayrat ('ash-Shairat') airfield at the Syrian government forces military base targeted earlier overnight by US Tomahawk cruise missiles, southeast of the central and third largest Syrian city of Homs, on April 7, 2017. / AFP PHOTO / STRINGER (Photo credit should read STRINGER/AFP/Getty Images)
A picture taken on April 7, 2017 shows a view of the damaged Shayrat ('ash-Shairat') airfield at the Syrian government forces military base targeted earlier overnight by US Tomahawk cruise missiles, southeast of the central and third largest Syrian city of Homs. / AFP PHOTO / STRINGER (Photo credit should read STRINGER/AFP/Getty Images)
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They will also discuss Libya. Italy is hoping for vocal support for a United Nations-backed government in Tripoli which has struggled to establish its authority even in the city, let alone in the rest of the violence-plagued north African country.

The Trump administration has not yet defined a clear policy and Rome fears Washington may fall into step with Egypt and Russia, which support general Khalifa Haftar, a powerful figure in eastern Libya.

The struggle against terrorism, relations with Iran and instability in Ukraine will also come up for discussion, with talks due to kick off at 4.30 p.m. (1430 GMT) on Monday. (Reporting by Crispian Balmer and Steve Scherer; editing by Andrew Roche)

RELATED: Syrian civilians killed since 2015 by responsible group

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