North Korean leader Kim Jong Un speaks during a ceremony to award party and state commendations to nuclear scientists, technicians, soldier-builders, workers and officials for their contribution to what North Korea said was a succesful hydrogen bomb test, at the meeting hall of the Central Committee of the Workers' Party of Korea (WPK) in this undated photo released by North Korea's Korean Central News Agency (KCNA) on January 13, 2016. REUTERS/KCNA

North Korea released a video Saturday depicting an imagined submarine-launched ballistic missile hitting Washington, D.C., and warning the U.S. that Pyongyang will attack America with nuclear weapons. The video comes after the U.S. tightened sanctions against North Korea this month for carrying out nuclear tests.

The four-minute long video, titled “Last Chance,” was published on the North Korean propaganda website DPRK Today on Saturday. The digitally modified video shows the missile shooting through the clouds and buzzing back to the earth only to hit the road in front of the Lincoln Memorial in Washington. The U.S. Capitol then explodes and a message flashes up saying: “If US imperialists budge an inch toward us, we will immediately hit them with nuclear [weapons],” Agence France-Presse reported.

The video also carries images from the Korean War, the capture of U.S. spy ship Pueblo in 1968 and the first crisis over Pyongyang’s nuclear program in the early 1990s. North Korea has been increasingly threatening the U.S. and South Korea because of Washington’s involvement in the Korean Peninsula and backing Seoul.

Earlier this week, another propaganda website of the North released a footage, showing Pyonyang blowing up South Korean President Park Geun-hye and the presidential office, Yonhap News Agency reported.

Last Sunday, state news agency Korean Central News Agency (KCNA) reported that North Korean leader Kim Jong Un guided landing and anti-landing exercises of the Korean People’s Army. The report added that the drill involved “surface ships and sharpshooters of the East Sea Fleet” of the country’s navy, “pursuit planes” of KPA Air and Anti-Air Force, artillery subunits and some other forces of the 108th Motorized Infantry Division of the KPA.

Kim expressed satisfaction over the drills and said: “Any enemy group will never land in seashore of the country as our reliable artillerymen stand guard in full readiness to wipe out the aggressors,” KCNA reported.

The U.S., South Korea and the United Nations Security Council imposed sanctions against North Korea over the missile tests and its nuclear advancements even as Kim called for more nuclear weapons.