NKorea has miniaturized nuclear warheads

SEOUL: North Korean leader Kim Jong-Un said his country has successfully miniaturized a thermo-nuclear warhead, as Pyongyang on Wednesday continued to talk up its nuclear strike capabilities amid rising military tensions on the Korean peninsula.

While the North has boasted of mastering miniaturization before, this is the first time Kim has directly claimed the breakthrough that experts see as a game-changing step towards a credible North Korean nuclear threat to the US mainland.