As China waged extensive military exercises off the coast of Taiwan last week, a group of American defence experts focused on their own simulation of an eventual – but for now entirely hypothetical – US-China war over the island. An anti-ship Brave Wind II missile is fired from a war ship in Taiwan’s eastern waters before last week’s stand-off with China. AP The unofficial what-if game is being conducted on the fifth floor of an office building not far from the White House, and it posits a US military response to a Chinese invasion in 2026. Even though the participants…