Then you know nothing of how China operates its military or its intelligence gathering apparatus. Ask any of the parts of the world that disagree with China about their sovereignty…
...you realize the US is invited to be in those countries, right?
And why would you see enemy tanks on an island? What you do see are many many Chinese ships and planes, constantly violating Taiwanese air and sea boundaries.
Some of them exist against the will of the host country's government, for example in Cuba and Iraq, and Iraq's government is even democratically elected (albeit with issues)
