Mumbai, April 21 -- Oil prices climbed Monday following the latest rise of tensions between the United States and Iran, but the moves were more modest than they were earlier in the war. U.S. stocks, meanwhile, gave back a bit of their record-breaking rally. The S&P 500 slipped 0.2% from its all-time high for just its second drop in 14 days after the United States seized an Iranian-flagged cargo vessel that it said had tried to evade its blockade of Iranian ports. The Dow Jones Industrial Average dipped 4 points or less than 0.1% and the Nasdaq composite fell 0.3%.

The price for a barrel of Brent crude oil, the international standard, climbed 5.6% to settle at $95.48 on worries that Iran could keep petroleum pent up in the Persian Gulf if...