Sadr, who has a huge following in Baghdad, is the first Shiite leader to call for Assad to give up power in Damascus.
Still, Congress is demanding consultations on the White House's broader strategy for the war-torn country.
Despite the U.S. strike against Assad, Trump's Syria policy remains unclear.
Russia suggested President Donald Trump had no clear strategy in Syria after the U.S. leader said an apparent chemical attack changed his views on Syrian President Bashar al-Assad.
U.S. and South Korean troops stormed mock North Korean chemical weapons labs as part of the ongoing military drills between Washington and Seoul.
There are early signs of what the borders of a peace settlement might look like.
Syrian minister attacks "Western" countries for accusing it of atrocities in five-year conflict.
Amnesty International documented more than 30 attacks in eight months.
The Syrian government allegedly dropped barrel bombs full of chlorine on an Aleppo suburb.
The U.N. has officially implicated the Syrian Air Force in chemical weapon attacks in Syria.
Elite U.S. troops were recently sent into northern Iraq to capture high-level ISIS figures.
New European Parliament report notes more than 150 attempts to smuggle toxic materials.
The Iraqi army has already equipped soldiers with gas masks and protective suits.
Manuel Valls says French authorities "must not rule anything out" after Paris attacks.
Chemical weapons experts say mustard gas was used in a Syrian town where ISIS was battling a rebel group.
Men are most likely to die from shootings and executions in Syria, according to a report by The BMJ.
The terrorist group uses the threat of chemical attack to frighten its enemies on the battlefield.