At a port on the Taiwanese island of Penghu, military have been testing explosions to test civil resilience and see its people are ready for war. Beijing also appears to have been testing new capabilities, with onlookers in China taking videos of what seemed to be a test of a huge amphibious bridging system, a possible path on to Taiwan. Sky's Wilfred Frost spoke to journalist and author, Humphrey Hawksley, about the ongoing tensions between China and Taiwan and what the global implications of