OTTAWA, Nov 13 (Reuters) - The leaders of Canada's three opposition parties met on Sunday to decide how and when to try to bring down the 16-month-old minority Liberal government and force an election, possibly as soon as next month. Following a change in heart by the New Democratic Party, which said on Monday that it would no longer be able to support the Liberals, the heads of the three parties met in Conservative leader Stephen Harper's office in Parliament. They kept reporters away from the meeting, but were understood to be discussing whether to bring the government down before...
