But these are only effective on a small scale - typically within a radius of a few city blocks ... in comparison to today's nukes - but the EMP blast still disrupted electrical and communication ...

U.S. President Donald Trump threatened Sunday to cut off all trade with countries doing business with North Korea, an ...

EMP is an intensive wave of electrical ... all electronic devices and computer systems within a radius of hundreds of kilometers of the blast site for up to several months. If the detonation ...