PARIS - France and Germany will continue efforts through the United Nations to find a peaceful solution to the Syrian crisis, French President Francois Hollande said in a statement on Friday after telephone talks with German Chancellor Angela Merkel.The joint statement came after the United States fired missiles at a Syrian airbase from which it said a deadly chemical weapons attack was launched this week by the regime of President Bashar a-Assad."Assad bears full responsibility for this development," the statement said.