Regarding the effect of the crisis with Iran on the Syrian negotiations, Minister Al-Jubeir stated, “We are committed to the Vienna process and to bring about a resolution to the Syrian crisis”.

Saudi officials say that by taking offence at the execution of Al Nimr, Tehran has demonstrated its claim of dominion over all Shiites regardless of national borders, which Riyadh in turn calls a fundamental threat to the global system.

Saudi Arabia’s foreign minister said today his country was looking into additional measures to take against Iran. “Residents and witnesses in Sanaa had also told Reuters there was no damage to the embassy building”.

Pakistan reaffirmed its support to Saudi Arabia, which is embroiled in a tense standoff with Iran, and the counter-terrorism coalition that it (Riyadh) was setting up.

Pictures from the city of Qatif showed what appeared to be hundreds of demonstrators, many clad in black.

Nimr was executed on Saturday along with 46 other prisoners that Riyadh said were “terrorists”.

Ministerial Council voiced strong condemnation and categorical rejection of the attacks against Saudi Arabia’s Embassy in Tehran and consulate in Mashhad.

Iran denounced those attacks, but the repercussions quickly rippled across the region and beyond with Saudi allies Bahrain, Djibouti, Somalia and Sudan following Riyadh’s example and cutting diplomatic ties with Teheran. The United Arab Emirates has downgraded relations with Iran, while Kuwait and Qatar have recalled their ambassadors.

In December, Iran fired rockets that passed within 1,500 yards of an American aircraft carrier in the Straits of Hormuz, an act described as “highly provocative” by the USA military.

He echoed comments made on Monday by Iran’s Intelligence Minister Mahmoud Alavi, who said that “By adopting terroristic and inhuman policies, the [Saudi] regime will not achieve enhanced security”.

The escalating tensions between the two adversaries may imperil efforts to end the wars gripping Syria and Yemen, where Saudi Arabia and Iran back rival sides.

Javad Zarif said in a letter to U.N. Secretary-General Ban Ki-moon obtained Friday by The Associated Press that Iran has “no desire or interest in escalation of tension in our neighborhood” and hopes Saudi Arabia will “heed the cause of reason”.