US: Relationship between Russia and China in Ukraine is "concerning"

The U.S. sees the relationship between Russia and China as relates to Ukraine as "concerning" and wants Beijing to play a responsible diplomatic role, White House Indo-Pacific coordinator Kurt Campbell said on Wednesday.

Campbell made the remark at an event at the Center for Strategic and International Studies think tank also attended by the European Union's top diplomat for Asia Gunnar Wiegand. (Reporting By Matt Spetalnick)