World powers meet in Paris on Thursday aiming to provide urgent humanitarian aid to Lebanon, support to its security forces and push for a ceasefire, but with the U.S. focused on its own efforts, diplomats said they expect little concrete progress. France has historical ties with Lebanon and has been working with Washington in trying to secure a ceasefire. But its influence has been limited since Israel launched a large-scale onslaught on Lebanon in September that has seen thousands displaced and more than 2,000 people killed. Paris hastily arranged the conference as a means to show it still h…