White House National Security Advisor John Bolton told Reuters that there is an agreement between President Donald Trump and North Korean leader Kim Jong Un to test launch long-range missiles.

Bolton told Fox News today (6) local time, "The United States is watching North Korea very carefully."

The US government believes that the launch vehicle launched by North Korea this morning is a short-range ballistic missile, which is not a breach of the North American summit.

US Defense Secretary Mark Esper, who is also visiting Japan, told reporters, "We won't overreact to North Korea's missile launches in recent weeks," Reuters reported.

North Korea declared a ceasefire in the nuclear test and intercontinental ballistic missile test at the Labor Party meeting in April last year.