Iranian protesters in Tehran hold pictures of Shiite cleric Nimr al-Nimr during a Jan. 4, 2016, demonstration against his execution by Saudi Arabia.

Saudi Arabia signaled on Tuesday that the breach in its relations with Iran would not affect talks on Syria, another round of which is scheduled in Geneva this month.

Riyadh and Tehran, which support opposing sides in the Syrian civil war, have attended previous talks on the conflict but there is concern that the new rift between the arch rivals could set back diplomatic efforts to bring peace to Syria.