Syria's political opposition in exile urged all Arab countries on Monday to sever diplomatic ties with Iran after Saudi Arabia, a strong supporter of the Syrian opposition, cut relations with Tehran.

Saudi Arabia has been rallying Sunni allies to its side in a growing diplomatic row with Iran, deepening a sectarian split across the Middle East following its execution of a prominent Shi'ite cleric.

The Turkey-based Syrian National Coalition declared its support for Riyadh's move, calling on "all Arab and Islamic countries to take a similar step" and criticised what it said was Iran's support for militias in Syria and Iraq. – Reuters