Six United States senators have arrived in Taiwan for a surprise visit, prompting an angry response from China. The delegation says it’s planning two days of talks on “U.S.-Taiwan relations” and regional security. New Jersey Democrat Bob Menendez, who chairs the Senate Foreign Relations Committee, spoke after he was welcomed by Taiwan’s president.

Sen. Bob Menendez: “With Taiwan producing 90% of the world’s high-end semiconductor products, it is a country of global significance, of global consequence, of global impact, and therefore it should be understood that the security of Taiwan has a global impact for those who would wish it ill.”

In response, China’s military sent naval ships, bombers and fighter planes to the East China Sea for war games. In a statement, the People’s Liberation Army warned, “U.S. bad actions and tricks are completely futile and very dangerous. Those who play with fire will burn themselves.”