Saudi Arabia's King Salman opened a Gulf Arab summit on Tuesday by calling for regional unity to confront Iran and secure energy supplies and maritime channels.
"Our region today is passing through circumstances and challenges that require concerted efforts to confront them as the Iranian regime continues its aggressive actions that threaten security and stability...," he said.
In a televised speech, he also urged the global community to address Iran's nuclear and ballistic missile programmes.
The 40th summit of the six-country Gulf Cooperation Council (GCC) is held this year after several attacks in the Gulf region which Riyadh and its allies blamed on Iran.
It also comes amid a possible rapprochement between Saudi Arabia and Qatar since a regional dispute erupted in 2017, when a Saudi-led quartet cut ties with Qatar, demanding it downgrade ties with Iran, which was rejected by Doha.
