Riyadh: Saudi Foreign Minister Adel al-Jubeir on Monday warned Tehran the kingdom would not tolerate "any infringement" on its national security, following a weekend missile attack on Riyadh by Iran-backed rebels in Yemen.
"Iranian interventions in the region are detrimental to the security of neighbouring countries and affect international peace and security. We will not allow any infringement on our national security," Jubeir tweeted.
"The kingdom reserves the right to respond in a timely manner to the hostile actions of the Iranian regime," he added, echoing earlier warnings by a Saudi-led military coalition in Yemen.
Saudi Arabia said the unprecedented missile attack, intercepted near Riyadh international airport on Saturday, "may amount to an act of war".
The coalition on Monday sealed off air, sea and land borders in Yemen, where it has been battling rebels in support of President Abedrabbo Mansour Hadi's internationally recognised government since 2015.