A formation of B-1B took off Guam on Tuesday and conducted a drill for preemptive strike on the DPRK in the sky of East Sea of Korea at night.

It also staged another drill for striking land targets over the West Sea under the cover of the puppet air force.

Pointing to the drills, Chongwadae of south Korea declared that those were pursuant to the consultation made with the U.S. to escalate the rotation deployment of strategic assets.

On the same day, a mine sweeper of the U.S. Navy entered Pusan Port to pave a marine route for invading the north.

Earlier on Oct. 7, an ultra-modern attack nuclear submarine of the U.S. entered Jinhae Port.

Meanwhile, the U.S. imperialist warmongers are mulling amassing nuclear carrier task forces in Western Pacific.

Nuclear carrier Theodore Roosevelt task force left a base in the U.S. mainland on Oct. 6. The task force is reportedly to stage a war maneuver in the operation area of the 7th and 5th fleets of the U.S. Navy.

The U.S. is contemplating sending Ronald Reagan task force for a joint military rehearsal with the puppet navy in the East Sea of Korea soon.