The U.S. government will ask Canada to keep as many as 500 to 600 troops in Afghanistan after this country's military deployment in Kandahar ends in 2011.

Sources inside and outside the government say the formal request is expected toward the end of this year through NATO. The troops would act as military trainers and would most likely be located in Kabul. The deployment would not involve putting Canadian troops in harm's way, but could nonetheless set off a rancorous national debate among Canadians and especially within the Liberal Party.

Read the entire Globe and Mail article here.