FILE PHOTO: U.S. President Donald Trump waves as he and China's President Xi Jinping walk along the front patio of the Mar-a-Lago estate after a bilateral meeting in Palm Beach, Florida, U.S., April 7, 2017. REUTERS/Carlos Barria/File Photo

(Reuters) - U.S. President Donald Trump on Sunday defended his reversal on whether to call China a currency manipulator, saying on Twitter that China was helping with the North Korean problem.

“Why would I call China a currency manipulator when they are working with us on the North Korean problem? We will see what happens!” Trump said on Twitter.