Palm Beach, Florida - Donald Trump blasted US spending on military aid for Taiwan in a new interview that raised serious doubts about security commitments to Taipei.

Speaking to Bloomberg, Trump expressed resentment towards Taiwan, saying it "took all of our chip business" and profited as a result.

He also questioned long-standing US commitments to Taipei's security in the face of potential Chinese aggression.

"I don't think we're any different from an insurance policy," he said. "Taiwan is 9,500 miles away... It's 68 miles away from China... Why? Why are we doing this?"

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Beijing lays claim to Taiwan and has for decades pursued a policy of reunification.

"I think Taiwan should pay us for defense," Trump insisted.

Taiwan's premier Cho Jung-Tai responded to Trump's comments in with a gentle rebuttal, emphasizing the island nation's dedication to its own defense and security.

"Taiwan has steadily strengthened its defense budget and demonstrated its responsibility to the international community," Cho told reporters. "We are willing to take on more responsibility, we are defending ourselves and ensuring our security."

Trump's comments came amid skyrocketing tensions between China and Taiwan, in particular since the inauguration of pro-independence Taiwanese President Lai Ching-Te.