(X pic)BAGHDAD : Iraqi Prime Minister Ali al-Zaidi received an invitation to visit Riyadh, his office said Friday, as Tehran-backed groups announced they would delay their response to deadly US-Saudi strikes in Iraq last month. Zaidi was supposed to visit Riyadh in late July, but the trip was cancelled due to the strikes which killed 20 militants, including five Iranians, on July 29. The US-Saudi strikes came after Riyadh said its forces had intercepted drones targeting oil facilities, blaming Iran-backed groups in Iraq. Two security sources told AFP that security measures were put in place to prevent a response to the US-Saudi strikes. The Islamic Resistance in Iraq, an alliance of Tehran-backed groups, had vowed to retaliate to the US-Saudi strikes.