SIRTE, Libya — The Arab League chief is urging the 22-nation bloc to engage Iran directly over concerns about its growing influence and its nuclear activities.Amr Moussa presented his proposal to a two-day Arab League leaders summit in Sirte, Libya, that started Saturday. The proposal could undermine US and Israeli efforts to isolate Iran.Moussa's engagement plan would involve a forum for regional cooperation and conflict resolution that would include non-Arab nations Iran and Turkey.Turkish Prime minister Recep Tayyip Erdogan immediately endorsed the proposal at the summit.The leaders are expected to discuss a range of regional issues, including stalled Middle East peace efforts.