North Korea practiced to hit American military bases in Japan after testing missiles, state media reported Tuesday. North Korea launched four ballistic missiles Monday morning, which landed in the sea of Japan. The U.S. currently has several military bases in Japan, as part of the countries' post-war security efforts. Japan's Prime Minister Shinzo Abe said that the launches clearly show North Korea is increasingly becoming a threat. White House press secretary Sean Spicer confirmed that the Trump administration is taking measures against North Korea's missiles.