The president's numbers are generally trending downward, polls show. A survey released Tuesday found 45 percent of Americans are happy with Obama's job performance, down from 50 percent in December. What gives?
Tensions on the Korean peninsula are ratcheting up. The US has started its annual war games with South Korean forces, and North Korea has used that fact to declare that it is invalidating the armistice agreement that ended the Korean War in 1953. What really has North Korea upset, though, is the tough, new sanctions passed by the United Nations in response to the North's nuclear test last month.Here are the top four questions analysts are wrestling with on the heels of these developments.