Brent crude edged higher while U.S. crude slipped on Tuesday as disappointing U.S. data reined in prices that had surged on hopes that Greece can reach a debt deal and on a European Union move toward budget discipline.

Iran completed a round of talks with U.N. nuclear inspectors, termed “constructive” in the semi-official Fars Iranian news agency, softening support from concern that U.S. lawmakers preparing a vote on more sanctions might trigger a supply disruption.

Expiring February U.S. gasoline and heating oil futures settled higher, supported by the threat of a U.S. refinery workers’ strike.