The mixed messaging began almost immediately after a Ukrainian passenger jet crashed near Tehran early Wednesday, killing all 176 people on board.
Iranian state media said the crash appeared to be the result of a malfunction. The Ukrainian Embassy in Tehran posted a similar assertion — then promptly deleted the statement. Now, U.S. and Canadian officials have said they have reason to believe that the plane was shot down by an Iranian air defense system — possibly by accident.
Read the full story and more in The Washington Post.