North Korea has renewed its threat to attack the U.S. island territory of Guam with missiles, warning that President Donald Trump’s social media antics and military moves are pushing Pyongyang over the edge. North Korea’s official Korean Central News Agency (KCNA) published Friday a new article attributed to Kim Kwang Hak, a researcher at the North Korean Foreign Ministry’s Institute for American Studies, in which he blasted the Trump administration’s pursuit of joint drills with Japan and South Korea, as well as the president’s militant “letters” on Twitter. In tweets, the Republican leader has suggested the U.S. may seek to disarm North Korea’s nuclear and ballistic weapons arsenal by force, and Kim wrote that such threats have led North Korea to revive an earlier plan to attack the Pacific island. Related: Trump just made war with Iran and North Korean more likely than ever, retired Army general says “We have already warned several times that we will take counteractions for self-defense including a salvo of missiles into waters near the U.S. territory of Guam, an advance base for invading the DPRK, where key U.S. bases are located, as the U.S. has resorted to military actions in sensitive regions, making the…