Kim Jong Un said North Korea has the ability to make nuclear warheads small enough to be fitted to its ballistic missiles, possibly increasing the threat to the U.S. and South Korea as the allies conduct their annual war games south of the heavily armed demilitarized zone.
The miniaturization of the warhead, if true, would be a major leap for North Korea’s nuclear ambitions marked by four nuclear tests since 2006, including one in January. North Korea said after its third test in 2013 that it had created nuclear missiles capable of reaching the U.S., but produced litt...
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