No sooner had Canada joined the American-led air offensive against Islamic State in Iraq than it was targeted in two separate terrorist attacks. Now it faces questions familiar to countries like Britain, long on the front line in the battle against jihadists Last week Canada woke up to a new and deeply disturbing reality. An Islamist extremist born of a Canadian mother and Libyan father gained access to the parliament building in Ottawa with the aim of murdering as many members of the Government as he could.Michael Zehaf-Bibeau, a 32-year-old who had converted to Islam in 2004, engaged in a fierce gun battle with police before he was shot dead by the Canadian House of Commons Sergeant-at-Arms, Kevin Vickers. Earlier, Zehaf-Bibeau had murdered Corporal Nathan Cirillo, a military reservist