Japanese Prime Minister Shinzo Abe said April 13 that North Korea may have the capacity to carry out an attack with missiles equipped with sarin gas, Reuters reported. Abe's comments to lawmakers came as tension in the region is rising over North Korea's nuclear weapons program. Though North Korea has long been suspected of maintaining a significant arsenal of nerve agents, delivering the chemicals by ballistic missile would be a very inefficient means of carrying out an attack. The flight of the missile and its explosion would severely degrade most of the nerve agent, rendering it less effective than other means of delivery would. The prime minister's warning comes as experts say North Korea could be preparing for another nuclear test.