U.S. stock futures were also lower as Japan Prime Minister Shinzo Abe said the government will hold a National Security Council meeting today after North Korea fired four ballistic missiles. The move comes as South Korea and the U.S. undertake annual military drills that Pyongyang has called a prelude to an invasion. Tensions have been rising over North Korea, which also conducted a missile test during Abe’s state visit to the U.S. last month and is suspected of being behind the assassination of its leader’s half brother in Malaysia.

U.S. stock futures were also lower as Japan Prime Minister Shinzo Abe said the government will hold a National Security Council meeting today after North Korea fired four ballistic missiles. The move comes as South Korea and the U.S. undertake annual military drills that Pyongyang has called a prelude to an invasion. Tensions have been rising over North Korea, which also conducted a missile test during Abe’s state visit to the U.S. last month and is suspected of being behind the assassination of its leader’s half brother in Malaysia.