0731 GMT - European energy stocks open lower on slumping oil prices as President Trump prioritizes diplomacy and says new talks with Iran will begin Monday. This pushes Brent down 5.2% to $83.41 a barrel, while WTI falls 3.3% to $73.94 a barrel. In London, BP falls 2.1% and Shell drops 1.2%. France's TotalEnergies, Italy's Eni and Spain's Repsol all fall around 2.2%. Norway's Equinor is down just over 3%.