North Korea appears to be protesting the joint U.S. and South Korean military maneuvers by jamming Global Positioning Devices in the south, which is a nuisance for cell phone and computers users — but may only be a hint of the looming menace for the military.
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The jamming has raised new questions about whether the Korean peninsula is bracing for electronic warfare.
The North is believed to be nearing completion of an electromagnetic pulse (EMP) bomb that, if exploded 25 miles above ground would cause irreversible damage to electrical and electronic devices such as mobile phones, computers, radio and radar.
