U.S. intelligence officials have warned President Obama and other senior American officials that North Korea intends to respond to the passage of a U.N. Security Council resolution this week -- condemning the communist country for its recent nuclear and ballistic missile tests -- with another nuclear test

What's more, Pyongyang's next nuclear detonation is but one of four planned actions

The other three actions include the reprocessing of all of the North's spent plutonium fuel rods into weapons-grade plutonium; a major escalation in the North's uranium-enrichment program; and the launching of another Taepodong-2 intercontinental ballistic missile from the Yunsong military complex on the west coast of North Korea.