Volodymyr Zelensky's office says president of the Islamic Republic fully recognizes tragedy that occurred 'due to the mistakes of soldiers of this country'

The European Aviation Safety Agency says it has re-evaluated dangers to commercial airline operations in light of Tehran's admission that it accidentally shot down passenger jet

Accidental downing of Ukranian airliner in Iran joins similar tragedies that took place in Ukraine, Somalia, Black Sea, Persian Gulf, Sakhalin and the Sinai Desert

Tehran continues to claim crash was an accident, Pompeo joins Western officials insisting they have evidence that the Ukrainian airliner was shot down by an Iranian missile

'We can say with certainty that no missile hit the plane,' head of national aviation department says, as world leaders assert intelligence shows otherwise

Victims of Ukrainian Airlines crash were students, newlyweds, doctors and parents; 'community is overwhelmed with mourning and sadness,' prominent Iranian-Canadian says

UK says 'body of information' points to missile strike, possibly accidental, joining US and Canada; Iran denies hitting liner, asks Canada to share intel

Sources quoted by major outlets say anti-aircraft system may have accidentally targeted jet; Iran says notion 'makes no sense'; Canada demands role in probe

National security council official says additional possible causes under consideration include drone or other flying object crashing into plane, terror attack, engine malfunction

President Zelensky decrees day of sorrow, vows to find 'the truth' of what happened to Flight PS752 outside Tehran, but warns against conspiracy theories