At least 42 people choked to death after a Syrian regime airstrike on the rebel-held Damascus suburb of Douma on April 7. Experts believe the attack used chemical weapons, allegations the United States is currently investigating to confirm.
Following the attack, rebel groups in Douma agree to withdraw to the north and hand Douma over to regime control.
Russian Foreign Minister Sergei Lavrov said there was no evidence chemical weapons were used in an attack.
The U.N. Security Council met two days later in New York to discuss the incident.
Meanwhile, one country has already taken action. Missiles struck the T-4 airbase in Homs province early Monday morning, causing multiple casualties. That airbase is reportedly also used by Iranian forces. Syria blamed Israel for the attack. Israel declined to comment.
Pressure is mounting on the U.S. and its allies to respond resolutely to the attack.
Do you think Trump should order a military response?