president, tsai ing-wen. china would never explicitly reveal its reasons. china gets intelligence every time they conduct these missions and what makes this one on sunday unprecedented is that for the first time in addition to the 18 fighter jets and five nuclear capable bombers the y-20 an aerial refueling aircraft, which allows china to conduct longer-range missions potentially putting within striking range, analysts say, u.s. troops in okinawa and potentially endangering u.s. troops in ga tguam. this is aimed at taiwan but not so directly to the united states. the president was at a military conference where he told troops they need to prepare and train and get out there so they can have the upper hand in future wars. this is a president who has said repeated will i if taiwan does not agree to china's demand that it reunify with the mainland,