President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE spoke on Saturday with British Prime Minister Theresa May and French President Emmanuel Macron, hours after the leaders' three countries launched joint military strikes in Syria.

Readouts of the phone calls issued by the White House said the leaders discussed the success of the Friday night military operations in Syria and the need to deter Syrian President Bashar Assad's government from conducting further chemical attacks.

The U.S. and its allies on Friday ordered "precision strikes" on targets in Syria believed to be associated with the country's chemical weapons arsenal.

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The strikes came in response to a suspected chemical weapon attack in the Damascus suburb of Douma last weekend that left dozens dead. Officials in the U.S. and other Western countries have blamed the Syrian government for that attack.

The allied strikes drew immediate condemnation from Syria and its allies, Iran and Russia, who accused the U.S., France and Britain of violating Syria's sovereignty and violating international law.

Syria, Russia and Iran have denied Assad's government used chemical weapons, and have blamed the attack in Douma on both foreign actors and militant groups.