Aug 16 (Reuters) - U.S. Secretary of State Antony Blinken held separate discussions on Monday with counterparts in Britain, the European Union, Turkey and NATO on the situation in Afghanistan and U.S. efforts to bring back their citizens, State Department spokesperson Ned Price said in a statement. Reporting by Bhargav Acharya in Bengaluru; Editing by Clarence Fernandez Our Standards: The Thomson Reuters Trust Principles.