The United States and European Union on Thursday voiced strong concern at China's "problematic and unilateral actions" in the South China Sea and stressed the need for close contact to manage "competition and systemic rivalry" with Beijing.

The joint statement followed talks in Washington between U.S. Deputy Secretary of State Wendy Sherman and the Secretary-General of the European External Action Service, Stefano Sannino.

It "emphasized the importance of the United States and EU maintaining continuous and close contacts on our respective approaches as we invest and grow our economies, cooperate with China where possible, and manage our competition and systemic rivalry with China responsibly."