Kim Jong Il started his nuke program in the 1990s. Albright paid him to stop. He took the money and kept at it anyhow. Bush called him on it and shut off the goodies. Kim behaved a little bit better. Now he is having a tantrum because we bawled at him for building IRBMs.
There aren't many good answers in Korea because Kim's conventional artillery could slag the top five cities in South Korea in the first day of a shooting war
But the idea that Obama's talk represents a bold new direction or somehow better than Bush is just agitprop