Saudi Arabia's severed all ties with Iran after its embassy in Tehran was attacked at the weekend.
It followed the Saudi's execution of prominent Shia cleric Sheikh Nimr al-Nimr and 46 others - including the killer of Irish Journalist Simon Cumbers - on Saturday.
The Saudi Foreign Minister says Iranian diplomats have just under two days to leave the country.
Professor Fawaz Gerges an expert on Middle East relations says it'll make matters worse in the region:
