The last time we fought China we had them on the run before politicians stopped our military.
that is not exactly true...we occupied almost all north korea and soon (60 days) after they came in we occupied none of north korea. They issued warnings of their intentions but we ignored them and started a new offensive....the be home by christmas offensive. Well, we were out of north korea by christmas but not home. When you consider all the circumstances it really negates any reason they would not do something like this again.
Read this:
http://www.inquiriesjournal.com/art...s-intervention-in-the-korean-war-in-1950In October 1950, Chinese troops under the name of the Chinese People’s Volunteer Army (CPV) crossed the Yalu River to assist North Korean armies, and engaged in the Korean War in an offensive manner after the U.S. troops crossed the 38th parallel. One central question immediately arises with regard to the Chinese intervention: Why did the newly established People’s Republic of China (PRC) decide to send its troops to engage in a war which did not take place on its own territory?
This issue is especially puzzling when one considers the facts that the economy of the PRC was shattered, with high inflation, extremely tight fiscal budget and lack of material resources. The internal security and authority of the regime was under threat by various acts of sabotage undertaken by remaining Kuomintang (KMT) agents, and the enemy China faced was far stronger in terms of military equipment and logistical supply. It should also be noted that the Chinese Communist Party (CCP) was preparing for the battles in Taiwan to unify the whole of China. In general, the conditions were highly unfavourable for an intervention operation.