President Trump on Saturday continued to dismiss a diplomatic approach in handling North Korea's escalating nuclear ambitions, saying "only one thing will work."

"Presidents and their administrations have been talking to North Korea for 25 years, agreements made and massive amounts of money paid hasn't worked, agreements violated before the ink was dry, makings fools of U.S. negotiators," Trump wrote in tweets.

"Sorry, but only one thing will work!" he added.

Presidents and their administrations have been talking to North Korea for 25 years, agreements made and massive amounts of money paid...... — Donald J. Trump (@realDonaldTrump) October 7, 2017

...hasn't worked, agreements violated before the ink was dry, makings fools of U.S. negotiators. Sorry, but only one thing will work! — Donald J. Trump (@realDonaldTrump) October 7, 2017

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Trump's tweets alluding to possible military action in dealing with the crisis on the Korean Peninsula echoed his comments last Sunday in which he argued that Secretary of State Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE was "wasting his time" trying to negotiate with North Korea.

The president said that his administration would "do what has to be done" in response to actions from North Korean leader Kim Jong Un, whom he referred to as "Little Rocket Man."

I told Rex Tillerson, our wonderful Secretary of State, that he is wasting his time trying to negotiate with Little Rocket Man... — Donald J. Trump (@realDonaldTrump) October 1, 2017

...Save your energy Rex, we'll do what has to be done! — Donald J. Trump (@realDonaldTrump) October 1, 2017

Tensions between Washington and Pyongyang have remained heightened in recent months, though relations between Trump and Tillerson have also gained fresh interest recently amid differing comments on the U.S. approach to North Korea.

Tillerson held a hastily-scheduled press conference on Wednesday to push back on reports that he considered resigning over the summer. Trump later expressed confidence in his chief diplomat, and officials emphasized that the administration was working together.

North Korea has put the international community on alert in recent months after testing a series of intercontinental ballistic missiles, including two over Japanese airspace.

Trump threatened to "totally destroy" North Korea on the floor of the United Nations last month, prompting the country's foreign minister to threaten to test a hydrogen bomb in the Pacific Ocean.