Eighty years after the end of World War II, Japan is rearming as China's military, the largest army in the world, continues to expand, hosting military drills in the Tasmanian Sea as well as in Taiwanese airspace.

Japanese and US forces are collaborating every year on joint military drills to prepare for the risk of conflict. In Taiwan, fears are mounting as the United States warns that a Taiwan invasion could occur by 2027.

With exclusive access, this special from the award-winning When Titans Clash series reveals how different countries in East Asia are preparing for the potential for conflict amidst threats to their security as well as the risk of nuclear warfare.