Taipei, Aug. 3 (CNA) National Security Council Secretary-General Joseph Wu (吳釗燮) has accused China of using its coast guard and other official vessels to threaten not only Taiwan but the broader Indo-Pacific. "The threat posed by China is toward the whole region," Wu said in an English-language interview with Nikkei Asia published Monday. According to Taiwan's Coast Guard Administration (CGA), Chinese coast guard and other official vessels have been operating in waters east of Taiwan and around Taiwan-controlled islands in the South China Sea in recent weeks. In the interview, Wu said Taiwan is taking steps to address the challenges posed by Chinese official vessels operating in surrounding waters. In recent months, U.S. Secretary of State Marco Rubio and the State Department have criticized China's deployment of coast guard vessels to waters near Taiwan, saying the operations undermine regional stability.