Saudi Arabia’s Foreign Minister Adel al-Jubeir has accused Iran of supporting terrorist groups in the region, saying this is “the behavior of a state sponsor of terrorism who deservedly is on the list of state sponsors of terrorism and who deservedly is sanctioned by the international community for this behavior.”

During a joint conference on Saturday in the Saudi capital of Riyadh with visiting US Secretary of State Rex Tillerson, al-Jubeir said Iran plants “terrorist cells in my country and in countries allied to us”.

He also called the resistance group Hezbollah “the world’s foremost terrorist organization”.

Al-Jubeir further said that his country will continue to judge Iran based on its deeds.

This comes as the U.S. sealed an arms deal with Saudi Arabia worth $350 billion over 10 years, with nearly $110 billion to take effect immediately.

Saudi Arabia ranks among the world's top 5 military spenders in 2016, exceeding all countries in the Middle East.

Riyadh openly supports militant groups across the Middle East, especially in war-torn countries including Syria and Iran, in which ISIS – the deadliest terrorist group in the world – emerged in 2014.

The Saudi regime’s military campaign against neighboring Yemen has also killed more than 11,000 people since its beginning in 2015.