HOUSTON: Crude futures fell marginally on Friday as investors considered oil's geopolitical risk premium amid drawn-out Russia-Ukraine peace talks, while keeping an eye on Sunday's Opec+ meeting for clues about potential output changes.

US West Texas Intermediate crude futures resumed trading after being frozen due to a system outage at exchange operator CME Group, blamed on a cooling issue at CyrusOne data centres. Brent trades on the Intercontinental Exchange, or ICE.