Former U.S. Pacific Command chief Harry Harris has called on Washington to reassess its long-standing policy of keeping its commitment to Taiwan's defense ambiguous, warning that China is seeking to "dominate" the self-ruled island.

China is on a quest to "first isolate and then dominate Taiwan," Harris, the U.S. ambassador to South Korea until January, said in a recent interview with Kyodo News, joining a chorus of warnings from the U.S. side over Beijing's stepped-up military pressure on Taipei.

The administration of U.S. President Joe Biden has demanded that China cease its military, diplomatic and economic pressure against Taiwan, while assisting the democratic island in maintaining a "sufficient self-defense capability" such as through arms sales.