A Tactical Nuclear Strike by North Korea Would Warrant a Big U.S. Response

A Tactical Nuclear Strike by North Korea Would Warrant a Big U.S. Response

TNI Staff

Security, Asia


But what would that be? 

Key Point: The deployment of a nuclear weapon, no matter how small, will raise the crisis level of a North Korean conflict.

In the event of a war on the Korean peninsula, how would the United States respond to the use of a tactical nuclear weapon on the battlefield that was not aimed at major population centers?

Analysts are divided on the issue, but the majority view is that once the nuclear threshold is crossed, the only possible response would be nuclear.

“Once an enemy uses a nuclear weapon—for any reason—it crosses the nuclear threshold and invites a nuclear response,” arms control expert Joseph Cirincione, president of the Ploughshares Fund, told The National Interest.

“U.S. military commanders would not say ‘Well, it was only an airburst. We should just respond in kind.’ They would answer with an overwhelming, devastating nuclear counter attack. And our nuclear weapons and command and control are designed to operate in a nuclear war environment, not just some puny EMP blast.”

Retired Air Force Lt. Gen. David Deptula, dean of the Mitchell Institute and former service intelligence chief, agreed with Cirincione. “A nuke is a nuke… No such thing as a ‘tactical’ nuke,” Deptula told The National Interest.  

“The terms ‘tactical’ and ‘strategic’ refer to outcomes or effects, not material things like aircraft or weapons.”

The United States has options to respond to the battlefield use of nuclear weapons–in the form of the B61 thermonuclear gravity bomb, which features the ability to scale its yield depending upon the situation—ranging from a 340 kiloton yield to as little as 0.3 kilotons. Most U.S. fighters including the F-16C, F-15E and—eventually—the F-35 stealth fighter can carry the B61.

“I assume that the U.S. response to any nuclear use would probably be nuclear, but that’s up to the President,” Joshua H. Pollack, editor of The Nonproliferation Review and a senior research associate at the James Martin Center for Nonproliferation Studies, told The National Interest.

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