Without a US led NATO the world could very well look like what George Orwell describes in 1984. We're already starting to see what the death of a free press and the corresponding weaponizing of all remaining information media will look like.
Let's hope the Europeans finally wake up and realize that this is their last chance to stand up. It's either that or face years and years of war and destruction. Trump IS right about NATO in a sense. But in the long run alienating the E.U. will just hurt our influence in the world. As far as our "soft power" in the rest of the world China will be glad to fill the void. We're already starting to see it in S America.