Oil prices halted their rally on Monday, with both benchmarks down nearly 1 percent, after Russia’s finance minister said Russia and OPEC may decide to boost production to fight for market share with the United States, where output remains at record highs. Losses were limited by a tightening of global supplies, as output has fallen in Iran and Venezuela amid signs the United States will further toughen sanctions on those two OPEC producers, and on the threat that renewed fighting could wipe out crude production in Libya. Brent crude futures ended the session at $71.18 a barrel, down 37 cents, or 0.5 percent, having ... (full story)