1. A U.S. newspaper is reporting that senior U.S. officials expressed irritation that Japan concealed a meeting with North Korea last month.
  2. U.S. Defense Secretary James Mattis has suggested that the United States may resume military exercises with South Korea.
  3. Japan’s vice-minister for foreign affairs will travel to China on Wednesday to lay the groundwork for a possible visit to the country by Prime Minister Shinzo Abe later this year.