People watch a television news screen showing a picture of North Korean leader Kim Jong-Un delivering a statement in Pyongyang, at a railway station in Seoul on September 22, 2017. 
US President Donald Trump is &#039;mentally deranged&#039; and will &#039;pay dearly&#039; for his threat to destroy North Korea, Kim Jong-Un said on September 22, as his foreign minister hinted the regime may explode a hydrogen bomb over the Pacific Ocean. / AFP PHOTO / JUNG Yeon-Je        (Photo credit should read JUNG YEON-JE/AFP/Getty Images)