Lets Get Real:
The Western Allies are concerned that a political wounded Trump after the failure of ObamaCare will try to gain his spurs on the international front, when it comes to Foreign Policy there are less Congressional restrictions on a Trump Oval. The US intelligence Agencies have been worried by North Korea through various US Administrations. As the article notes a quick strike would not deal a deadly blow to North Korea, as it has hidden its defence assets under ground, also they could attack South Korea, there is a large presence of US troops in the South, thus if attacked this would bring the US more into the action. Thus the problem of North Korea, no easy answers or results. One day North Korea will have an ICBM, then what will the US and its allies do about this thorny problem.