U.S. stock futures fell after peace talks between the U.S. and Iran got off to a rocky start on Sunday, as President Donald Trump wasted no time with threats to renew war.

Futures tied to the Dow Jones industrial average fell 156 points, or 0.30%. S&P 500 futures were down 0.46%, and Nasdaq futures lost 0.52%.

But oil prices reversed earlier gains after negotiation mediators Qatar and Pakistan reported “encouraging progress” with the creation of a line of communication over the Strait of Hormuz and the a “de-confliction cell” to end fighting in Lebanon.

U.S. oil futures were flat at $76.58 a barrel, while Brent crude fell 1.45% to $79.36. Gold dropped 1.15% to $4,196.10 per ounce.

Earlier in Switzerland, Vice President JD Vance said both sides had already made “great progress” in talks, saying the U.S. side represented an “outstretched hand” toward the people of Iran.