Japan goes off script at nuclear summit to slam North Korea

* Japan veers from nuclear summit agenda to criticise rocket plan

* Obama warns against complacency in fighting nuclear terrorism

* Summit statement light on substantial goals

* Japan's Noda spells out lessons learnt from Fukushima

By Kiyoshi Takenaka and Jack Kim

SEOUL, March 27 (Reuters) - Japan steered off the agenda at a nuclear security summit on Tuesday to hit out at North Korea's plans for a rocket launch next month, as U.S. President Barack Obama cautioned against complacency in dealing with the threat of nuclear terrorism.

The summit was briefly interrupted by a dispute between Argentina and Britain, which went to war in 1982 over the Falkland Islands, over suggestions Britain had sent a submarine capable of carrying nuclear weapons to the South Atlantic.

A communique issued at the end of the two-day meeting of more than 50 world leaders in Seoul was light on specifics on how to reduce the risk of atomic materials falling into bad hands, loosely calling for all vulnerable material to be secured in four years. Read More