Oil prices mixed in Asia: Brent drops to $77.90, Murban and Russian Urals slide as US sanctions relief boosts prospects for more Iranian crude

Markets eye durable truce before unwinding geopolitical risk premium in crude

Brent crude futures rose 54 cents, or 0.67%, to $81.11 a barrel, after briefly touching $82.30 at the start of trading. U.S. West Texas Intermediate (WTI) crude futures gained…