The President said the move will be “devastating” for Pyongyang.
Asked whether he would consider sending the military into North Korea, Mr Trump, said: “We are totally prepared for the second option, not preferred, but it will be devastating, I can tell you that – that’s called the military option.
“If we have to take it we will.
“He’s acting very badly. He’s saying things he should never ever say but it’s a reply.
“The things he’s said over the past year and to past administrations – North Korea is a situation which should have been handled 25-years ago, ten, five-years-ago.
“Many administrations have left me with this mess but I’ll fix the mess.”
His threat came amid a tranche of bellicose statements by Mr Trump and despot leader Kim Jong-un.
Yesterday North Korean Foreign Minister Ri Yong Ho accused Mr Trump of declaring war on the North and threatened to shoot down US warplanes flying near the peninsula.
Last weekend American bombers flew the closest they ever have to the country.
Mr Ri was reacting to the President’s comments Kim and Ri “would be around much longer” if they carried out their threats toward the US.
North Korea’s sixth and most powerful nuclear missile test was carried out on September 3.
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