The US Embassy in Riyadh, Saudi Arabia was struck by "two UAVs that hit the roof and perimeter of the chancery," WSJ reported, citing the US State Department.

US President Donald Trump said attack against Iran to last four to five weeks, could go "far longer."

Three US fighter jets were mistakenly downed by Kuwaiti fire on Monday, according to the US military.

Click here for CGTN's earlier reports.