The incursion of a record number of Chinese warplanes into Taiwan’s air defence zone has heightened simmering tensions in the region and reignited fears that military conflict might be imminent, writes Mattie Brignal. China’s People’s Liberation Army has sent 149 jets and nuclear-capable bombers into the southern section of the Taiwan Strait in the last four days. While the aircraft did not cross into Taiwanese airspace, they did fly into the area Taiwan monitors for incoming threats.