Annan said Wednesday he invited the top diplomats of the five permanent members of the Security Council -- China , France , Russia , the United Kingdom and the United States -- and Turkey . NEW : At least 20 people killed in Syria on Wednesday , the group says . Action ##s for Syria diplomats to convene in Switzerland . A U.N. report details the political clout of rebel forces . WHO : About 1.5 million people are in need of ` ` urgent '' humanitarian assistance .
NEW : At least 20 people killed in Syria on Wednesday , the group says . Action ##s for Syria diplomats to convene in Switzerland . A U.N. report details the political clout of rebel forces . WHO : About 1.5 million people are in need of ` ` urgent '' humanitarian assistance .