The region was left with blocs and enemies who were not talking to each other. The result was horrid wars and the threat of even worse wars.
It has long been known that a key to opening those blocs and initiating diplomacy would be a negotiated peace between the heads of the two main rivals, Saudi Arabia and Iran. It has also long been known that the United States withheld that key. Unlocking the blocs is not in American interest. Hegemony in the region requires punishing and isolating countries that won't follow you. That requires sanctions, threats of war, and isolation. Iran is such a country. So, the establishment and maintenance of a coalition against Iran is a key feature of U.S. policy in the region. At the heart of that coalition is Saudi Arabia, firmly in the U.S.-led anti-Iran camp.
But the emergence of China as diplomatic power has "blindsided" the United States and changed the diplomatic environment in the Middle East. China chose peace instead of sides and brought Saudi Arabia and Iran together for talks. Having the blocs talk to each other instead of enforcing their isolation shook the U.S. world order. On March 10, those talks resulted in an agreement between Saudi Arabia and Iran.
And the key to opening talks, ending wars, and bringing peace to the Middle East is already showing its promise. After years of region destabilizing enmity, Saudi Arabia and Iran signed "an agreement to resume diplomatic relations between them and re-open their embassies and missions within a period not exceeding two months."
The agreement is showing signs of working. True to their word, on April 6 the foreign ministers of Saudi Arabia and Iran met in Beijing where they signed an agreement to reopen their embassies and consulates in each other's countries. And Saudi King Salman bin Abdulaziz Al Saud has invited Iranian President Ebrahim Raisi for an official visit. Raisi has accepted the invitation and "stressed Iran's readiness to expand co-operation." The two countries have also agreed to hold a meeting of their foreign ministers. Peace is breaking out.