The exercise presented a fraught scenario: China’s military had blockaded Taiwan by air and sea, and Southeast Asian countries were grappling with how to evacuate as many as 1 million of their nationals trapped on the besieged island. Over two days in April at a Singapore hotel, some 40 participants and observers in the war game, including serving and retired Asia-Pacific officials and military officers, as well as security scholars, simulated their responses to the unfolding crisis, according to four people familiar with the discussions. Hours ticked by as some players weighed unified action through the Association of Southeast Asian Nations, while others reached out to the mock U.S., Chinese and Japanese delegates to negotiate special air and sea corridors to extract foreign nationals. Eventually, the people said, a stark conclusion emerged: The Southeast Asian states needed a Singaporean airlift to have a chance of evacuating their people. “Nothing was moving until the Singaporeans stepped in at the 11th hour,” said one participant in the event at the Jen Singapore Tanglin hotel. “They had found a way of getting their own people out, and offered to get others out, too.” Reflecting its discreet and decades-old security presence inside Taiwan, where its forces train, Singapore was able to leverage access to airfields and aircraft, the person said. But the exercise ended before any detailed discussion of how Singapore had reached a deal with China to secure an evacuation route through the blockade, or how precisely it would work, three of the people told Reuters.

Full report : Simulated Chinese blockade of Taiwan reveals Singapore as lifeline.