British fighter jets have taken part in their first airstrikes in Syria, hours after UK lawmakers voted in favor of bombing ISIS strongholds there. "RAF Tornadoes have just returned from their first offensive operation over Syria and have conducted strikes," a spokesman for Britain's Ministry of Defense (MOD) said early Thursday. The four jets took off from Akrotiri air base in Cyprus, targeting an oil field in Eastern Syria, the MOD said. More details on the operation are expected from the ministry later today. Lawmakers voted 397 in favor of action and 223 against, following a 10-hour debate. After the November 13 terror attacks in Paris, France asked the U.S.-led coalition to bump up the military offensive against ISIS. Now that Britain has decided to expand airstrikes that it previously conducted only in Iraq, the spotlight is on the German Parliament, which also is expected to approve greater military commitment against the terror group. The German plan would activate 1,200 troops in anti-ISIS efforts, but in a support role -- not direct combat. U.S. President Barack Obama welcomed the British move and said the coalition would work "to integrate them into our coalition air tasking orders as quickly as possible." Prime Minister David Cameron kicked off the debate by saying that ISIS is a threat to the British people, proved in part through the beheadings of UK hostages in the Middle East and other atrocities. "This is not about whether we want to fight terrorism. It's about how best we do that," Cameron said. He said the UK faces "'a fundamental threat to our security" and posed the question, "Do we work with our allies to degrade and destruct this threat ... or do we sit back and wait for them to attack us?" "This is the right thing to do to keep Britain safe, to deal with this evil organization and as part of a process to bring peace and stability to Syria," Foreign Secretary Philip Hammond said. Hammond said the military campaign will have two stages: airstrikes to degrade ISIS capabilities and an eventual ground assault. The airstrikes can begin "pretty much straight away" after the vote passes, he said.