President-elect Donald Trump is risking a major diplomatic dispute with China after speaking on the phone Friday with the president of Taiwan, the Financial Times reported. The telephone call between Trump and Tsai Ying-wen is believed to be the first between a U.S. president and a Taiwanese leader since the two cut diplomatic ties in 1979. China regards the island as a renegade province. The FT said the Trump transition team did not respond to its requests for comment. Read more: Donald Trump spoke with Taiwan President Tsai Ing-wen