North Korea appears to have called the US President's bluff, redoubling its aggressive statements and outlining a detailed plan to target the American Pacific territory of Guam with a series of missile strikes.
But Mr Trump has not let the developing crisis take up all of his time, continuing to attack his fellow Republicans on social media over the failure to pass a reformed healthcare bill.
Shortly after 7am local time, Mr Trump retweeted the conservative-leaning Progress Polls account asking: "Who is a better President of the United States?" Sixty-one per cent voted for Mr Trump, while 39 per cent voted for Mr Obama.
The President later returned the unfolding situation on the Korean peninsula, retweeting a Fox & Friends report on a statement by Secretary of Defense James Mattis warning Kim Jong-un was "grossly unmatched" in any conflict with the US.
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