SafetyPipeline accident shuts off Russian gas supplies to GreeceRepairs on the pipeline link between Bulgaria and Greece put in doubt planned resumption of Russian gas supplies via TurkStream later in AugustSupply chain: Turkish President Recep Tayyip Erdogan, right, and Russian President Vladimir Putin speak during an inauguration ceremony for gas export pipeline TurkStream in Istanbul in January this yearPhoto: AP/SCANPIXVladimir AfanasievMoscow