SAUDI ARABIA, Riyadh : In this handout picture released by the official Saudi Press Agency (SPA), Saudi Crown Prince Nayef bin Abdul Aziz (R) meets with Turkey's Prime Minister Recep Tayyip Erdogan in Riyadh on April 14, 2012. Erdogan met with Saudi King Abdullah the previous day on the Syrian conflict, amid Gulf Arab calls to arm rebels despite a tenuous truce going into effect.