British Prime Minister David Cameron urged skeptical lawmakers to back airstrikes on the Islamic State group in Syria, saying Thursday that the Paris attacks have given the fight new urgency and Britain owes it to key allies to act.
Cameron told the House of Commons that President Barack Obama and French President Francois Hollande had urged Britain to join the military campaign in Syria.
"These are our closest allies and they want our help," he said.
"We have to hit these terrorists in their heartlands. We have not and we must not shirk our responsibility for security or hand it to others."
Some previously skeptical lawmakers said they were...