title: Lebanon's grand mufti calls for national unity
text: BEIRUT (Reuters) - Lebanon s grand mufti, the top cleric for Sunni Muslims, said Saad al-Hariri s resignation as Prime Minister came amid difficult circumstances, Lebanese Al-Jadeed TV reported on Friday. Grand Mufti Sheikh Abdul Latif Derian called for national unity and for waiting before taking any stance on the shock resignation, which Hariri announced in a broadcast from Saudi Arabia on Saturday. Derian described Lebanon s ties with Riyadh as  brotherly, historical relations . 