China criticized new U.S. military aid to Taiwan on Monday, saying the $571 million package seriously violated the "one China principle" and the provisions of joint communiques between China and the United States, Reuters reported, BTA reported.
China will take "all necessary measures" to safeguard its sovereignty and territorial integrity, a foreign ministry spokesman said in Beijing.
He called Taiwan a "red line that must not be crossed" in Sino-U.S. relations.
Beijing considers the democratically-ruled island of Taiwan its territory, a claim that the government in Taipei rejects, Reuters noted.