AP, Turkey :World leaders vowed Monday to boost intelligence-sharing, cut off terrorist funding and strengthen border security in Europe, as they sought to show resolve and unity following the deadly terror attacks in Paris.U.S. President Barack Obama said ISIS is “the face of evil” and called on nations to do more to combat the threat it poses. He said that rather than cast about for a new strategy, the U.S. would intensify its current campaign of airstrikes and arming and training moderate forces.”We need to be doing everything we can to protect against attacks and protect our citizens,” Obama said at a news conference closing two days of talks as leaders from the Group of 20 rich and developing nations wrapped up a two-day summit.Added German Chancellor Angela Merkel: “We agreed that the challenge can’t just be tackled with military mean, but only a multitude of measures.”Still, the leaders largely spoke of their agreements in broad strokes, with few specifics. Russian President Vladimir Putin emphasized the need to cut off the Islamic State’s ability to generate revenue through oil smuggling. And British Prime Minister David Cameron announced plans to host a donor conference early next year to raise “significant new funding” to tackle the flood of refugees spilling out of Syria.”None of this is a substitute for the next urgent need of all: to find a political solution that brings peace to Syria and enables the millions of refugees to return home,” Cameron said.