The rapprochement between Russia, China and North Korea, or with India, is a threat to the US position both economically and militarily. So it is normal and inevitable that Trump or any American would be worried and scared. If they say they are not worried and scared, they are lying.

Trump’s rambling on his social media only shows that he is more insecure than ever but can do nothing. This is what he usually does when he feels helpless about something.