The U.S. National Transportation Safety Board (NTSB) has accepted an invitation from Iran to take part in its investigation into the crash of a Ukrainian airplane in Tehran, the agency confirmed late on Thursday. The NTSB said in a statement its Response Operations Center had received...

Iran spurned the U.S. president’s call for a new nuclear pact and its commanders threatened more attacks as the Middle East remained on edge following the U.S. killing of an Iranian general and Tehran’s retaliatory missile strikes. Concern the war-scarred region was primed for a wider...

A Ukraine airliner that crashed in Iran, killing all 176 people aboard, was most likely brought down accidentally by Iranian air defenses, U.S. officials said on Thursday, as President Donald Trump said he had a terrible feeling about the disaster. One U.S. official said U.S. satellites had...

Iranian investigators said Thursday that the crew members of the Ukrainian jetliner that crashed the previous day never made a radio call for help and were trying to turn back to the airport when the plane went down. Iran's civil aviation authority made the comments in a preliminary...