Canadian troops have joined the UN peacekeeping mission to Mali. While only a one-year mission, it could be one of the toughest our troops have faced. Mali is considered the deadliest peacekeeping mission to date, with 170 peacekeepers killed there since 2013. The landlocked West African country has been torn apart by ethnic insurgency and terrorist groups since 2012. The Canadian forces are joining about 13,000 international troops to provide medical evacuations and aerial support. The CBC’s Adrienne Arsenault joined the advance team as they arrived to see what they face firsthand.