Obama, in Japan, says NKorea's isolation means less leverage

TOKYO — Former President Barack Obama said Sunday that negotiations with North Korea on its nuclear weapons program are difficult, partly because the country's isolation minimizes possible leverage, such as trade and travel sanctions against Pyongyang."North Korea is an example of a country that is so far out of the international norms and so disconnected with the rest of the world," Obama told a packed hall in Tokyo.He stressed that the effort to get North Korea to give up nuclear weapons