While Beijing publicly advocates restraint, sustained tensions between the U.S. and Iran serve its strategic interests.Recent heightened tensions between the United States and Iran over Tehran’s repression of nationwide protests and its advancing nuclear program have raised concerns about maintaining peace and stability in the Middle East. U.S. President Donald Trump has ordered key military assets to move into the region, and he may decide on whether to use force within the next few days. At the same time, Washington and Tehran have met indirectly in Oman and agreed that diplomacy on the nuclear issue should continue. Diplomacy is the...