OPEC has weathered conflicts Civil.unrest before , even between its members , but has so far been fortunate that the headwind of exports lost Movement.down.loss to Libya 's civil strife Civil.unrest has been eased by rising Movement.up.gain output elsewhere , most notably by the boom Grow.strong in U.S. production .

Crude oil prices rose Movement.up.gain slightly on Tuesday on supply disruptions Cause.movement.down.loss due to the conflicts Civil.unrest in Iraq and Ukraine .