The latest Market Talks covering Energy markets. Published exclusively on Dow Jones Newswires throughout the day.

0737 GMT - Oil prices fall more than 1.5% as investors await details on expected U.S. sanctions on Iran. "The move could further tighten global oil supplies, with Iranian exports already disrupted and offers to China reduced," analysts at Saxo Bank say. In early European trading, Brent crude is down 1.7% to $91.01 a barrel, while WTI futures slide 2.1% to $85.20 a barrel. Both benchmarks closed last week more than 6% higher as talks to reopen Hormuz hit a stalemate and President Trump announced plans to tighten the economic squeeze on Tehran. U.S. Treasury Secretary Scott Bessent is set to ​hold a press conference at 2 p.m. Eastern time when he is expected to announce details about new economic sanctions against Iran. (giulia.petroni@wsj.com)

0709 GMT - Bitcoin rises slightly, staying below Friday's three-month high but remaining elevated. The recent rally is helped by improving liquidity expectations, lower regulatory risk premium and forced short-covering, where investors close earlier bets against an asset as it strengthens, Zaye Capital Markets analyst Naeem Aslam says in a note. "U.S. Treasury action to increase purchases of longer-dated securities helped pull yields lower and improve risk appetite, while President Trump's renewed push for clearer digital-asset legislation has strengthened expectations that institutional participation could become easier." Bitcoin's next phase depends on whether its move above $77,000 develops into sustained demand, he says. Bitcoin rises 0.1% to $77,472, having reached as high as $79,455 Friday, according to LSEG. (renae.dyer@wsj.com)

0700 GMT - Eurozone government bond yields fall in opening trade as global markets start the week with relief, helped by a slight decline in oil prices. This week's focus is on the Kansas City Fed's annual Jackson Hole symposium with Federal Reserve Chairman's Kevin Warsh's speeach. "Warsh is likely to focus on credibility and emphasize that the Fed is ready to act on inflation to control the long end of the curve," Jefferies' Mohit Kumar says in a note. On Monday, Belgium will conduct a bond auction. The 10-year Bund yield falls 2.4 basis points to 2.324%, according to Tradeweb. Ireland's 10-year bond yield declines 2.2 basis points to 3.388% after Moody's Ratings upgraded Ireland to Aa2 from Aa3, with a positive outlook on Friday. (emese.bartha@wsj.com)

0654 GMT - The dollar edges higher as U.S.-Iran tensions persist. Treasury Secretary Scott Bessent said in an opinion piece for the Financial Times that an "economic D-Day" was coming for Iran. Bessent is expected to provide details on sanctions at a news conference later in the day. "The dollar's reaction is likely to depend on the scope and severity of the sanctions," Commerzbank's Volkar Baur says in a note. The dollar could fall if several countries with economic ties to Iran are affected by sanctions, he says. The DXY dollar index rises 0.1% to 98.871, having reached a three-month low of 98.557 Thursday after the Treasury announced increased buybacks of long-term debt. (renae.dyer@wsj.com)

0603 GMT - Bond markets remain vulnerable as oil prices are still elevated and fiscal fears are mounting, Commerzbank's Hauke Siemssen says in a note. "Global bond markets remain vulnerable with yields across the curves testing multi-year highs," the rates strategist says. While this morning's consolidation is encouraging, a lasting turnaround seems unlikely for now as there is no easy fix to the underlying drivers, he says. The strategist expects input for the markets from U.S. PCE inflation data and guidance from the Kansas City Fed's annual Jackson Hole symposium this week, adding that the data and the symposium "should become intriguing." (emese.bartha@wsj.com)

0546 GMT - U.S. Treasury yields decline in Asian trade, but nonetheless remain at elevated levels as oil prices also move lower. "Last week it was all about U.S. Treasurys and [Treasury Secretary Scott] Bessent's announcement on increased long-end buyback, prompting a mid-week rally," Danske Bank's Jesper Fjarstedt says in a note. "But as markets digested this and concluded that the structural drivers remain the same, the initial move was reversed and long-dated yields closed the week broadly unchanged," the senior analyst says. The 10-year Treasury yield falls 2.2 basis points to 4.714%, while the 30-year yield, which hit a 19-year high of 5.337% last week, declines 2.7 basis points to 5.248%, according to Tradeweb. Brent falls 1.36% to $93.11 per barrel.