Taiwan faces military threats on a daily basis from "authoritarian forces," President Tsai Ing-wen said Tuesday, as the United States announced a new $280 million arms sale package to the Chinese-claimed island, the sixth this year.

China expressed anger at the weapons sale, as it always does, threatening unspecified retaliation.

The outgoing Trump administration has ramped up support for the island democracy, with 11 arms sale packages in total, and on Monday the U.S. government notified Congress of the sale of a new Field Information Communications System.