WASHINGTON, April 14 (Xinhua) — Many people hold posters during a protest against U.S. strike on Syria outside the White House in Washington D.C., the United States, on April 14, 2018.

The United States launched precise strike in cooperation with Britain and France against Syrian military facilities on Friday.

According to the White House, Trump and Macron affirmed in the call that the joint airstrikes were "successful and necessary" to deter Syria from any further use of chemical weapons.

They also discussed the need to reinvigorate multinational stabilization efforts in Syria to ensure the long-term defeat of Islamic State (IS).