TOKYO - Japan is ready for North Korea to carry out its threatened nuclear test as soon as this weekend, officials said yesterday. Japanese Vice-Foreign Minister Shotaro Yachi, on a visit to Washington, said Pyongyang's resolve to test its first atom bomb should not be underestimated. "We discussed the possibility that the test would occur this weekend," Mr Yachi said after talks with US Deputy National Security Adviser Jack Crouch. North Korea issued a statement on Tuesday saying it would test a nuclear bomb, dramatically raising the stakes in its standoff with the US on its quest for atomic weapons....