After Canadian Prime MinisterJustin Trudeau suggests the plane was downed by an Iranian missile, Iranian authorities reject this theory. Iranian civil aviation chief says he is "certain" the plane was not hit by a missile, still asserting the cause was "mechanical failure". (BBC News)
Iraqi cleric and Grand Ayatollah Ali al-Sistani condemns both the United States and Iran over the escalation of conflict in Iraq, saying it shows blatant disregard for Iraqi sovereignty and the suffering of the Iraqi people. (Reuters)