Another round of U.S. strikes on Iranian targets came on Wednesday. Tehran retaliated by launching attacks on Kuwait, Bahrain and Qatar.
The U.S. strikes followed remarks by Trump in Turkey yesterday that he believed the two sides' interim agreement was "over" and that negotiating with Tehran was not worthwhile.
However, he also said the war likely would not restart, noting: "Anything that happens is going to be over very quickly ... and will only make it safer, including for oil".
And traders appear to put more weight on the latter message. Oil prices have been relatively calm, paring early gains to trade at around $78/bbl on Thursday morning. That's around where they settled on Wednesday after rising more than 5%.
The question now is if we do see both sides pull back from this latest eruption, how far do prices fall? If the Gulf is now in a chronically unstable situation as Tehran vies for control over the Strait of Hormuz, a higher risk premium would likely need to be reflected in crude prices.
Global bond yields continued to rise on Thursday given the renewed tensions in the Middle East and inflation fears, with Japan's benchmark 10-year government bond yield hitting a 30-year high.
In equities, chip stocks staged a bit of a comeback stateside on Wednesday. Broadcom rallied after Apple said it planned to spend more than $30 billion on the semiconductor giant's chips, helping the Nasdaq edge up slightly.
And memory chip optimism was also reflected in news that SK Hynix's $28 billion U.S. share sale was more than seven times oversubscribed. The South Korean chipmaker's shares jumped 5% in Asia, though the KOSPI ended lower once again after rallying earlier in the session.
Wall Street futures, meanwhile, were in the green before the bell on Thursday.
On the monetary policy front, Wednesday saw the release of the Fed's June meeting minutes, which showed an evenly divided debate over whether to hold or hike rates, with a "few participants" noting a potential case for immediate hikes and several pointing out that price pressures were becoming "more broad-based".
Elsewhere, NATO member states may have breathed a sigh of relief after the conclusion of the summit in Turkey, where President Trump said there had been "a lot of unity" and announced Ukraine would be granted a license to manufacture Patriot missile interceptors. That was a big win for Kyiv.
Meanwhile, Russia announced on Wednesday that it would ban diesel exports as part of its efforts to support its domestic fuel market. Systematic Ukrainian drone attacks on oil refineries have triggered gasoline shortages and price spikes in one of the world's largest oil-producing nations.