Egyptian President Mohamed Mursi arrives in Tehran - the first Egyptian leader to visit since Iran's Islamic revolution in 1979.
Mursi, who gained office after Egypt's own revolution in 2011, was quick to support another regional struggle - the Syrian uprising.
Speaking at the Non-Aligned Movement summit in the Iranian capital, he declared his support for Syrian's fighting to overthrow president al-Assad.
(SOUNDBITE) (Arabic) EGYPTIAN PRESIDEN MOHAMED MURSI:
"Our solidarity with the struggle of the Syrian people against an oppressive regime that has lost its legitimacy is an ethical duty as well as a political and strategic necessity."
His comments reportedly sparked a walkout by the Syrian delegation.
The NAM summit's final delaration is set to express deep concern over the violence in Syria and support UN-Arab League efforts broker a peaceful resolution to the conflict.