Ukrainian jet crash kills 176, sets off mourning in Canada

By DAVID KOENIG and JON GAMBRELL
The crash of an Ukrainian jetliner that killed 176 people in Iran touched off mourning Wednesday in both Ukraine and Canada — where most of the victims were from or were headed — and raised a host of questions about what went wrong. But U.S. intelligence officials said there was no immediate evidence it was shot down.
The jetliner, a Boeing 737 operated by Ukrainian International Airlines, went down on the outskirts of Tehran during takeoff just hours