SEOUL, South Korea North Korea fired a rocket over Japan on Sunday, defying Washington, Tokyo and others who suspect the launch was cover for a test of its long-range missile technology. President Barack Obama warned the move would further isolate the communist nation. Liftoff took place at 11:30 am (0230 GMT) from the coastal Musudan-ri launch pad in northeastern North Korea, the South Korean and US governments said. The multistage rocket hurtled toward the Pacific, reaching Japanese ...