US House Speaker Nancy Pelosi's flight has landed in Taiwan amid warnings by China that the US will have to "pay the price" for it. "Our delegation's visit to Taiwan honors America's unwavering commitment to supporting Taiwan's vibrant Democracy," she said in a series of tweets minutes after her arrival. Responding to Pelosi's visit, China said it's army is on high alert and will launch "targeted military operations". China claims Taiwan to be its territory and had warned US repeatedly against the Taiwan trip.