The Canadian government has announced it will extend its airstrikes against ISIS into Syrian territory.
Prime Minister Stephen Harper said Canada would not seek "express consent" of the Syrian regime.
"Instead, we will work closely with our American and other allies, who have already been carrying out such operations against ISIL over Syria in recent months."
"The government recognises that ISIL's power base, indeed the so-called caliphate's capital, is in Syria," Mr Harper said in the House of Commons.
"In our view, ISIL [IS] must cease to have any safe haven in Syria," he said.
Opposition parties voted against the deployment of Canadian forces.
New Democrat Party leader Tom Mulcair told the Commons on Tuesday Canada had "no place in this war", while Liberal leader Justin Trudeau said Mr Harper had been "steadily drawing Canada deeper into a war in Iraq", according to the BBC.
"It now wants to expand that war into Syria," Mr Trudeau said.