Oil prices rebounded Thursday morning, with Brent crude (BZ=F) trading back above $100 after the White House said it was awaiting a response from Iran to move forward with potential second-round peace talks. These talks were initially planned for last weekend.

Futures on Brent crude, the international benchmark, rose 0.9% to trade near $103 per barrel, while those on US benchmark West Texas Intermediate (WTI) crude (CL=F) gained 1% to trade around $94 per barrel.

Since Tuesday, the US and Iran have settled into a near stalemate over the Strait of Hormuz. On Tuesday night, President Trump said he was unilaterally extending the war’s two-week ceasefire indefinitely at the request of Pakistan. Tehran has said it will not negotiate while a US naval blockade of the strait, the world’s most critical waterway for energy flows, remains in place.

The US also canceled travel by Vice President JD Vance, special envoy Steve Witkoff, and the president’s son-in-law Jared Kushner to Islamabad on Tuesday.

Read more: What an extended war with Iran could mean for gas prices

In the strait, traffic has essentially stalled. The president said Thursday morning in a pair of Truth Social posts that he had ordered the US Navy to conduct minesweeping operations throughout the waterway, and that the military had received orders to shoot and destroy any ships seen placing mines in the water.

“We have total control over the Strait of Hormuz. No ship can enter or leave without the approval of the United States Navy,” the president wrote. “It is ‘Sealed up Tight,’ until such time as Iran is able to make a DEAL!!!”

In posts to social media, Trump has claimed the Iranian regime is losing $500 million per day. White House press secretary Karoline Leavitt said the dollar figure is the “crux” of the naval blockade, and that the US is “strangling their main source of revenue.”

Yet, even as the US Navy has blocked, boarded, and seized a number of vessels in the Strait of Hormuz in recent days, ships have continued to slip by, according to intelligence firm Vortexa. As of Wednesday, more than 30 vessels with links to Iran had successfully crossed the blockade, at least two of which were fully laden with oil, Vortexa analysis showed.

Iranian ships have also fired on several vessels in the strait, provoking backlash from the US and other nations. In comments on X, Iranian President Masoud Pezeshkian said Iran “welcome[s] dialogue and agreement,” but that “breach of commitments, blockade and threats are main obstacles to genuine negotiations.”