Europe's central bankers are leaving an annual getaway with their United States counterparts far from reassured that long-standing norms in global cooperation remain intact and worried that more turmoil is ahead for an already testy relationship with Washington, sources familiar with the discussion said.

Recent US Treasury interventions to prop up the Japanese yen and to lower longer-term US borrowing costs were particularly concerning

Europe's central bankers are leaving an annual getaway with their United States counterparts far from reassured that long-standing norms in global cooperation remain intact and…