Noting the same types of attacks that have occurred in England, Spain and the United States might also occur in Canada, Martin said Canadian troops must continue the fight in Afghanistan even if it antagonizes those who would carry out such a crime.
During a Friday stop in northern Ontario, he was asked about recent statements by Canadian Public Safety Minister Anne McLellan that Canada is not immune to terrorist attacks.
He said Canadians "should be under no illusion that Canada, along with the rest of the world, (is not a target) for terrorists."
"None of us can be complacent and none of us can regard ourselves as living on some kind of island." said Martin.