On Sunday, President Joe Biden approved $567 million in defense assistance for Taiwan, according to the White House, as China increases its political and military pressure on the self-governing island.

While the U.S. does not formally recognize Taiwan diplomatically, it remains Taipei’s primary partner and a major supplier of weapons—something that has drawn Beijing’s ire. China has repeatedly urged Washington to cease its arms support for Taiwan, which it claims as part of its territory.

In a brief statement, the White House announced that Biden had authorized the Secretary of State to oversee the drawdown of up to $567 million in defense articles and services from the Department of Defense, along with military education and training to assist Taiwan. The specifics of the package were not detailed, but it is nearly double the $345 million in defense support approved last July.

Earlier this year, the U.S. also authorized billions in military aid for Taiwan in response to China’s increasingly assertive stance.

Beijing has consistently expressed its anger over international support for Taiwan, accusing Washington of interfering in its internal affairs. China maintains a nearly constant presence of fighter jets, drones, and warships around the island and has stated it will never renounce the use of force to assert control over Taiwan, reinforcing its rhetoric about “inevitable” unification.

In response to the new defense assistance, China’s foreign ministry warned on Monday that U.S. arms sales to Taiwan would have negative consequences. Spokesman Lin Jian urged Washington to “stop arming Taiwan in any form,” asserting that such actions would ultimately backfire and lead to self-inflicted consequences for the U.S.