Ali Akbar Velayati (2ndL), Iran's Supreme Leader Ayatollah Ali Khamenei's top adviser on international affairs, accompanied with Iranian ambassador in Lebanon Mohammad Fathali (2ndR) pray at the grave of assassinated Hezbollah military commander Imad Moughniyah and his son Jihad in the southern suburbs of Beirut May 18, 2015. REUTERS/Aziz Taher