Chinese President Xi Jinping’s regime has scuttled a dialogue with the United States on nuclear arms control and nonproliferation, citing U.S. arms sales to Taiwan.

“Over the past weeks and months, despite China’s firm opposition and repeated protest, the U.S. has continued to sell arms to Taiwan and done things that severely undermine China’s core interests and the mutual trust between China and the U.S.,” Chinese Foreign Ministry spokesman Lin Jian said Wednesday. “Consequently, the Chinese side has decided to hold off discussion with the US on a new round of consultations on arms control and non-proliferation.”