Oil prices were rising in early trading as the U.S. ramped up pressure on Venezuela, raising concerns over supply disruptions in the region.Brent crude was up 0.9% to $61.03 a barrel, while WTI gained 1$57.07 a barrel on news that the U.S. Coast Guard is pursuing a tanker involved in transporting oil from Venezuela shortly after apprehending one that wasn't on its sanctions list."These geopolitical developments have helped put a floor under oil prices, as faster than expected OPEC+ output increases, ri ...