Former Vice President Dick Cheney told Republicans they should be very wary of recent threats from North Korea, CNN reported on Tuesday.

"We're in deep doo doo," Cheney warned top GOP lawmakers, a Republican leadership aide told CNN.

Cheney reportedly expressed concern about the lack of intel on young North Korean leader Kim Jung-Un, making him very unpredictable. The former vice president cited his past experience with Saddam Hussein and added, "you never know what they're thinking."

Cheney's past experience recently made him a target for scrutiny around the 10th anniversary of the war in Iraq, when Americans took to the Internet to publicly shame the Bush administration for initiating the war.

His warning comes after weeks of tension between North Korea and the U.S. escalated when Kim threatened a pre-emptive strike against the U.S. in March. Earlier this month, North Korean leaders claimed to have authorized a nuclear strike on the U.S.

White House spokesman Jay Carney responded to threats in March, affirming that "the United States is fully capable of defending against any North Korean ballistic missile attack."

Adm. Samuel Locklear, commander of U.S. Pacific Command, also said the United States has the capacity to intercept a missile, should North Korea attempt an attack, the Associated Press reported earlier this month.

But some officials are taking North Korea's aggression with a grain of salt.

In March, Pentagon press secretary George Little speculated that the rhetoric coming from Pyongyang are part of a pattern of empty threats.

"North Korea's bellicose rhetoric and threats follow a well-worn pattern designed to raise tensions and intimidate others," Little said.

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