The nonbinding congressional resolution was introduced first in the House after the U.S. launched an airstrike that killed Iranian Gen. Qassem Soleimani.

"If you make the slightest error, we will hit both of you," Major General Hossein Salami said at a ceremony marking the 40th day since the death of top commander Qassem Soleimani.

Tim Kaine and other supporters said the resolution was not about Trump or even the presidency, but instead was an important reassertion of congressional power to declare war.

The Democratic-led House voted nearly along party lines to pass one measure that would prohibit military action against Iran without congressional approval.

EU foreign ministers, in a rare emergency meeting, may avoid any tough diplomatic response for now.

Canada’s evacuation from Iraq began after NATO suspended a mission there. Wednesday's tragic crash in Iran shows how risky flying in the Persian Gulf can be, Matthew Fisher says.

The Democratic war powers resolution seems certain to pass over solid Republican opposition.

Both sides appeared to step back on Wednesday after Iran launched a series of ballistic missiles at two military bases housing American troops in Iraq without causing any casualties.

No one was injured in the missile attack, which was in retaliation for the killing of Iranian Maj.-Gen. Qassem Soleimani by a U.S. drone last week.

There was no immediate claim of responsibility.