'Invasion' barges, subsea cable cutters and surprise naval drills: how China is testing Donald Trump

In the space of just five weeks, China held live-fire drills on the doorsteps of Australia, Taiwan and Vietnam. It tested new landing barges on ships that could facilitate an amphibious assault on Taiwan. And it unveiled deep-sea cable cutters with the ability to switch off another country's internet access - a tool no other nation admits to having. China has been flexing its maritime muscle in the Indo-Pacific to send a message of supremacy to its regional neighbours, experts say. But it's also testing the thinking of a bigger rival further afield: Donald Trump. Since Trump took office in…