U.S. oil prices rise on weaker dollar, U.S. drilling in focus

U.S. oil climbed on Tuesday as the dollar weakened, but an increase in drilling activity in the United States is likely to keep a lid on prices. Brent crude , the international benchmark for oil prices, was yet to start trading. The dollar slumped to a seven-week low against a currency basket on Monday, weighed by concerns about the early days of U.S. President Donald Trump's administration that have so far been marred by protests, a protectionist inauguration speech and angry comments on Twitte