Corbyn: 'Heavy responsibility' of Syria vote
Jeremy Corbyn said that involving UK forces in military activity abroad was a "serious, solemn and morally challenging" decision.
The Labour leader urged MPs to consider the "potentially far-reaching consequences" of air strikes in Syria.
Earlier David Cameron said people who opposed the military action were "terrorist sympathisers"; Mr Corbyn said the remark "demeans" the office of the prime minister.