US President Barack Obama led calls Tuesday for Turkey and Russia to end their dispute over the downing of a Russian fighter jet and focus instead on Islamic State, the real enemy. “I want to be very clear: Turkey is a NATO ally. The US supports Turkish rights to defend itself and its airspace and its territory,” Obama said after meeting his Turkish counterpart Recep Tayyip Erdogan in Paris. “We all have a common enemy and that is IS and I want to make sure we focus on that threat,” Obama said. Erdogan, who has demanded that Russian President Vladimir Putin provide evidence to back up charges Ankara trades oil with IS, said he too was keen to move on. “We are always willing to resort to the diplomatic language, we want to avoid the tensions,” he said. NATO chief Jens Stoltenberg urged key ally Turkey and Russia to change tack and find ways to avoid a repeat of an incident which threatens to scupper efforts to forge a common front against IS. “The focus now should be on how we can de-escalate and calm tensions, and find mechanisms so that we can avoid the type of incident we saw last week,” Stoltenberg said. He was speaking at the start of a two-day NATO foreign ministers meeting which will review measures adopted by the alliance after the Ukraine crisis to upgrade readiness levels and reassure nervous eastern Europe members who were once ruled from Moscow that the alliance will stand by them.