Iranian President Hassan Rouhani called the incident "a painful and unforgivable" mistake and promised that his administration would pursue the case "by all means."
Britain, France and Germany have launched action under the Iran nuclear agreement paving the way for possible sanctions in response to Tehran's attempts to roll back parts of the deal, European Union foreign policy chief Josep Borrell said Tuesday.
Iranians have expressed anger over the downing of the plane and the misleading explanations from senior officials in the wake of the tragedy. They are also mourning the dead, which included many young people who were studying abroad.
After many denials, Iran's admission that it accidentally downed a Ukrainian plane was cautiously embraced by world leaders as a "step forward." Back in Tehran, protesters' reaction was far angrier.
Two U.S. service members were killed and two others injured when their vehicle was hit by a roadside bomb in southern Afghanistan, the U.S. military said in a statement Saturday.
Iraq's caretaker prime minister asked the U.S. secretary of state to start working out a road map for an American troop withdrawal from Iraq, his office said Friday, signaling his insistence on ending the U.S. military presence despite recent moves to deescalate tensions between Iran and the U.S.
U.S., Canadian and British officials said Thursday it is "highly likely" that Iran shot down the Boeing 737 that crashed near Tehran late Tuesday. U.S. officials said the jetliner might have been mistakenly identified as a threat.
At least five structures were damaged in the attack on the base in Anbar province, which apparently was precise enough to hit individual buildings. There have been no reports of casualties.
The U.S. and Iran have stepped back from the brink of possible war, but the region is still on edge. Hours after President Trump spoke, an “incoming” siren went off in Baghdad's Green Zone after what seemed to be small rockets "impacted" the diplomatic area, a Western official said.