No more than we would tolerate China camped on our border, will they allow us to be on their border.
Thus war with Korea is highly likely to be war with China as well. Now look at how foolish that 419-3 congressional vote now looks hitting Russia with sanctions. What has to be made perfectly clear to the Chinese: We will not tolerate a nuclear armed North Korea. The Chinese had better convince the North Koreans to give up their weapons because this is a head-on train wreck.
As Trump indicates, we are ready for thermonuclear war. There is no globalist world order when push comes to shove. It will be every country for itself, just as the Chinese have indicated they will pursue their own national interests, and will not rein in Kim’s nuclear ambitions.
Our foreign policy has abandoned the Neville Chamberlains of the world that believe in appeasement. People like Susan Rice are so passe. The Chinese just showed what they think about globalism.
My thoughts on the matter is this: The United States invaded Iraq and removed Saddam Hussein on a hunch, which later proved to be totally false. He didn’t have any weapons of mass destruction. Kim Jong Un by contrast does have nuclear weapons; North Korea has conducted a total of five nuclear tests, in 2006, 2009, 2013 and twice in 2016. He is a threat and should be taken out. Since we attacked Iraq on a whim, this is much more solid, and the world should get behind it. But you see globalism is a pile of crap, as Chinese national interests trump world peace. I say hit them, i.e., the North Koreans, and hit them hard while we have this window of opportunity before they are better armed.
If that means a showdown with China, so be it.