NDP Leader Thomas Mulcair was asking Harper if he intended to extend the Afghanistan mission past 2014 after a Postmedia News report Wednesday said U.S officials had asked Canadian special forces to stay past the withdrawal date.

The prime minister responded the NDP has a pacifistic ideology “regardless of circumstances” and his government would make the right decision for Afghanistan’s security.

“In 1939, the NDP leader didn’t even want to support the fight against Hitler,” Harper said, before being drowned out by cat calls.

NDP MPs gently reminded Harper from across the aisle that the NDP didn’t come into existence until 1961, birthed by a union between the socialist Co-operative Commonwealth Federation (CCF) and the Canadian Labour Congress.

“CCF, NDP, same difference,” Harper responded curtly.

“I guess we can start talking about Reform Party policies,” Mulcair replied, to the delight of the opposition benches.