Syrian state media are reporting that experts from the Organization for the Prohibition of Chemical Weapons (OPCW) have entered the Syrian town of Douma.
Three members of Iran's security forces have been killed by suspected militants in an attack along the country's border with Pakistan, Iran's state news agency IRNA says.
Syrian state television says the country's air defenses shot down missiles targeting its Shayrat airfield late on April 16.
Meeting in Luxembourg, EU foreign ministers strongly defended the 2015 nuclear deal between Tehran and world powers, and declined to impose new sanctions against Iran over its role in the Syrian conflict.
The White House said the U.S. mission in Syria has not changed, reiterating that President Donald Trump wants American troops home "as quickly as possible."
The United States plans to announce new targeted sanctions against Russia over Moscow's support for Syrian President Bashar al-Assad.
Iran’s central bank has announced a ban on the sale of foreign currencies at exchange bureaus.