PYONGYANG, North Korea — North Korean leader Kim Jong Un said Saturday the second flight test of an intercontinental ballistic missile demonstrated his country can hit the U.S. mainland, hours after the launch left analysts concluding that a wide swath of the United States, including Los Angeles and Chicago, is now in range of North Korean weapons.

The Korean Central News Agency said that Kim expressed “great satisfaction” after the Hwasong-14 missile reached a maximum height of 2,314 miles and traveled 620 miles before accurately landing in waters off Japan. The agency said that the test was aimed at confirming the maximum range and other technical aspects of the missile it says was capable of delivering a “large-sized, heavy nuclear warhead.”

Analysts had estimated that the North’s first ICBM on July 4 could have reached Alaska, and said that the latest missile appeared to extend that range significantly.

Immediately after the launch, U.S. and South Korean forces conducted live-fire exercises.