The Prime Minister of Lebanon resigned on Saturday unexpectedly while on a trip to Saudi Arabia, saying his life is in danger.
In a televised address from Riyadh, Prime Minister Saad Hariri said he feared a plot to assassinate him, accusing Iran of meddling in his politically divided country.
He pointed to Hezbollah, the powerful militant group, which has Iran's backing, and accused Iran of creating a state within a state.
Iran denied those accusations, saying instead that Hariri's resignation was orchestrated by Saudi Arabia and the United States.
Hariri's stepping down ends a shaky political alliance with Hezbollah, and it's unclear who could succeed Hariri.
By law a new PM will have to be a Sunni Muslim.