North Korea is biding time before it conducts 7th nuclear test, experts say

North Korea tested dozens of missiles last week but it is uncertain when its seventh nuclear test will take place. Some experts say Kim Jong Un is biding his time.

Recalling the failure of imposing new U.N. Security Council resolutions even after the North tested ICBMs this year, Lee added that the North Korean leader "has nothing to lose by taking his time and continuing his strategy of graduated escalation before delivering his coup de grâce, a major nuclear test or even a series of tests."   Mitch Shin is a Seoul, South Korea-based reporter for Fox News Digital. Shin is also serving as a Chief Koreas Correspondent for The Diplomat. Shin was previously a journalist for Asia Times and a news assistant for contributors at DW and Al-Jazeera. He received a bachelor's degree in Communication from the University of Utah. Follow him on Twitter: @MitchShin5

As South Korea and the United States have reinvigorated their joint military exercises, including the latest "Vigilant Storm" air drill, North Korea has routinely responded to them by launching ballistic missiles and firing  artillery shells.