Stan Choe Updated April 21, 2026 — 6:56am , first published 5:21am Oil prices climbed 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. US stocks, meanwhile, gave back a bit of their record-breaking rally. The S&P 500 slipped 0.2 per cent 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 per cent, and the Nasdaq composite fell 0.3 per cent. Wall Street is in the red to start the week. Bloomberg The Australian sharemarket is set to advance, with futures at 6.40am AEST pointing to a rise of 43 points, or 0.5 per cent, at the open. The ASX added 0.1 per cent on Monday. The Australian dollar was trading at US71.78¢.…