South Korea says it will reinforce its military cybercommand with new cyberwarfare weapons as it increases its readiness against threats from North Korea. The plan will double the number of workers at the cybercommand to 1,000, Yonhap news agency reported. The country has accused its northern neighbor of hacking government Web sites and banking systems and of interfering with Global Positioning System jamming signals on commercial planes and ships near the nation\'s western border. South Korea will also increase the number of surface-to-surface ballistic missiles aimed at North Korean nuclear weapons facilities and missile bases, according to a defense ministry plan given to President Lee Myung-bak. The plan calls for the Navy to establish a submarine command and build six next-generation destroyers. The Air Force will set up a 200-man unit to monitor spy satellites. At the same time, the number of troops will be cut from 636,000 to 522,000 by 2022. The ministry has asked for an additional $52.3 trillion to implement the plan between 2012 and 2016.