And then, has the U.S. prepared a contingency plan in the event that there is some negative global market reaction on Monday?

WHITEHOUSE: Press Briefing

But the Cheonan incident also comes at a time when influential voices in America, China and South Korea are starting to worry that none of the countries involved has a contingency plan to cope with an even more momentous event such as a sudden collapse of the regime.

ECONOMIST: North Korea