Egyptian President Mohamed Morsy supports calls by people in Syria for President Bashar al-Assad to be tried for war crimes, he told CNN on Sunday in an exclusive interview.

Morsy has also invited the heads of the two major Palestinian factions to meet in Cairo in hopes of building unity — a task he acknowledged won’t be easy.

Speaking to CNN’s Wolf Blitzer in Cairo, Morsy said he invited Palestinian Authority President Mahmoud Abbas to meet with Khaled Meshaal, the political leader of Hamas, who lives in Cairo.