Sunday papers reported that Secretary of Defense Mattis will visit China in the spring to meet with President Xi and other senior Chinese officials, saying it will be the first trip to China by a defense secretary in four years. Secretary Mattis is expected to seek Chinese cooperation for defusing the tension on the Korean Peninsula, which may rise again following the conclusion of the PyeongChang Olympics/Paralympics in March. Papers reported he will also probably discuss China’s maritime advancement in the South and East China Seas and bilateral military exchanges.