A social media post from US President Donald Trump lifted the Australian sharemarket and dropped the price of Brent crude oil below $US100, as markets reacted to the possibility of the Strait of Hormuz reopening. The benchmark ASX 200 lifted by 35 points or 0.40 per cent to 8692, while the broader All Ordinaries added 38.20 points or 0.43 per cent to 8915.40.This was a two week high for the benchmark index.Australia’s dollar also firmed against the greenback to buy 71.65 US cents.Overall six of the 11 sectors traded higher led by mining and information technology stocks. BHP shares added 0.62 per cent to $60.12, while Rio Tinto climbed 1.62 per cent to $187.81 and Fortescue jumped 1.67 per cent to $21.86. Xero shares firmed 0.99 per cent to $76.59, WiseTech finished 0.75 per cent to $37.37 and Codan shares finished 1.15 per cent to $40.42.It was a mixed day for the major banks as Commonwealth fell 0.65 per cent to $164.60, Westpac added 0.60 per cent to $36.77, NAB closed 1.14 per cent higher to $38.28 and ANZ closed up 0.76 per cent to $35.77. Brent crude oil prices dropped a further 5.6 per cent to $US97.77 ($136.40) as peace talks between the United States and Iran firmed.Overnight, US President Donald Trump said the end of the war was “largely negotiated” US President Donald Trump wrote on Truth Social “Final aspects and details of the Deal are ‌currently being discussed, and will ⁠be ‌announced shortly,” before hosing down expectations by stating his country “does not make bad deals”.Mr Trump said if he makes a deal, it will be a “good one”.“If I make a deal with Iran, it will be a good and proper one, not like the one made by Obama, which gave Iran massive amounts of CASH, and a clear and open path to a Nuclear Weapon,” Mr Trump wrote.“Our deal is the exact opposite, but nobody has seen it, or knows what it is.“It isn’t even fully negotiated yet.”Energy stocks slumped on the Mr Trump post with Woodside shares fell 4.24 per cent to $30.74, Santos dropped 3.64 per cent to $7.94 and Ampol gave up 4.20 per cent to $33.95. Capital.com senior financial market analyst Kyle Rodda said speculation about a looming US-Iran helped lift markets, although traders were treading carefully. “There is healthy scepticism – along with plenty of cynicism – about the prospects of a deal. That’s especially true after months of misleading news and propaganda about a peace deal. Recent reportage suggests negotiators are closing in on an agreement,” he said. In company news Charter Hall shares rallied 6.67 per cent to $20.62 after it upgraded its 2026 operating earnings and told the market year-to-date equity inflows totalled $6.5bn. Adore Beauty shares also firmed 6.25 per cent to $0.34 after it delivered unaudited year-to-date performance of $193.4m in revenue for the 47 weeks ending May 24. Mexican fast food company Guzman y Gomez continued its surge early on Monday, before it closed marginally higher up 0.25 per cent to $19.86 following Friday’s announcement it will exit the US market after six years of losses.During the mornings trading GYG jumped to $21.77 a share. Read related topics:ASXDonald Trump