Canadian diplomats on delicate mission

A Canadian parliamentary delegation that's travelling to China has a delicate mission ahead, given the current diplomatic dust-up between Ottawa and Beijing.

Liberal Senator Joseph Day of New Brunswick is leading the six-member delegation, whose original goal was simply to deepen trade ties with China.

But that was before Canadians Michael Kovrig and Michael Spavor were detained in China in apparent retaliation for the arrest in Vancouver of Chinese tech executive Meng Wanzhou at the request of the United States.

China has denounced Meng's arrest as a violation of international law.

Day says his delegation of two senators and four members of Parliament will be calling for the release of Spavor and Kovrig, but will tread very carefully in doing so.

He says his delegation will do its best to explain things like Canada's extradition treaty with the US to Chinese lawmakers.