Lebanon's political crisis has taken a dramatic turn with the possibility that a friend of Syrian President Bashar Assad could become president in a power-sharing deal aimed at breathing life back into the paralyzed state.

The idea of Suleiman Franjieh, a childhood friend of Assad, becoming head of state has taken aback many Lebanese, not least because of who suggested it: Saad al-Hariri, a Sunni politician who leads an alliance forged from opposition to Syrian influence in Lebanon. He would become prime minister under the deal.

It is no less startling because of the backing it would require from Saudi Arabia and Iran, rival states that wield decisive influence over Lebanon's competing factions and who are in conflict elsewhere in the region, including in Syria.