A former senior White House adviser to President Obama blasted President Trump's latest warning to North Korea on Tuesday, saying it could "only be interpreted" as a nuclear threat.

"Don't gloss over the fact that Trump threatened what can only be interpreted as a nuclear attack on North Korea if Kim Jong-un taunts him," tweeted Dan Pfeiffer, who also served as a former White House communications director.

Don't gloss over the fact that Trump threatened what can only be intrepreted as a nuclear attack on North Korea if Kim Jong-un taunts him https://t.co/EcPE1lzlr5 — Dan Pfeiffer (@danpfeiffer) August 8, 2017

The tweet came after Trump warned Pyongyang against making continued threats to the U.S., saying it would result in "fire and fury like the world has never seen."

The president was responding to reports that North Korea has successfully developed a miniaturized nuclear warhead that can be carried by an intercontinental ballistic missile.

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"North Korea best not make any more threats to the United States," Trump told reporters at his golf club in Bedminster, N.J., where he is on a 17-day working vacation. "They will be met with fire and fury like the world has never seen."

Trump did not elaborate on what he meant by that comment. But the president has floated the notion of conflict with North Korea before, telling Reuters in an interview earlier this year that a "major, major conflict" with the nation is possible.

Tensions between Washington and Pyongyang have heightened in recent months as North Korea amps up the pace of its missile tests. The country conducted its first successful test of an intercontinental ballistic missile last month, followed by a second one weeks later.

North Korean leader Kim Jong Un has said that the missile is capable of striking the mainland United States.