THORNHILL, Ont. - Stephen Harper says an election campaign is not the time to be talking about bolstering Canada's military effort in Libya.

The prime minister says a sitting Parliament must be consulted in Canada is to answer international pleas to send more attack aircraft to unseat Libyan leader Moammar Gadhafi.

Rifts are opening up among NATO members as the U.S. withdraws from active bombing, leaving a handful of other allies to assume responsibility for enforcing the UN-sanction no-fly zone over Libya.

Harper reiterated that Gadhafi must be deposed and he praised Canada's military effort, which includes 500 military personnel, a frigate and seven fighter jets.

In mid-March, Parliament authorized Canada's participation in the military mission for three months.

Foreign Affairs Minister Lawrence Cannon is attending a meeting of his NATO counterparts in Berlin.

Britain and France want more aircraft capable of attacking ground targets in Libya.