Men walk near Patriot Advanced Capability-3 (PAC-3) land-to-air missiles at the Defence Ministry in Tokyo April 10, 2012. Isolated and impoverished North Korea said on Tuesday it was ready to go ahead with its proposed long-range rocket launch in a move that sparked immediate condemnation from South Korea and Russia and a plea from China, its main ally, for calm.   REUTERS/Toru Hanai (JAPAN - Tags: POLITICS MILITARY TPX IMAGES OF THE DAY) *** Local Caption ***  TOK508_KOREA-NORTH-_0410_11.JPG
Tokyo has readied Patriot missiles to shoot down any debris from North Korea's rocket should it fall on Japanese soil.

Neighbours condemn North Korea as Unha-3 rocket is ready to launch