Biden to quadruple U.S. troop presence in Taiwan.

Market Watch: Biden administration plans to quadruple U.S. troop presence in Taiwan.

WASHINGTON—The U.S. is markedly increasing the number of troops deployed to Taiwan, more than quadrupling the current number to bolster a training program for the island’s military amid a rising threat from China.

The U.S. plans to deploy between 100 and 200 troops to the island in the coming months, up from roughly 30 there a year ago, according to U.S. officials. The larger force will expand a training program the Pentagon has taken pains not to publicize as the U.S. works to provide Taipei with the capabilities it needs to defend itself without provoking Beijing.

The number of American troops, which has included special-operations forces and U.S. Marines, has fluctuated by a handful during the past few years, according to Defense Department data. The planned increase would be the largest deployment of forces in decades by the U.S. on Taiwan, as the two draw closer to counter China’s growing military power.