US President Donald Trump warned Iran that the United States will likely ​engage in additional strikes on Wednesday night after ‌attacks the previous day.

"I'll give a little warning: We're going to hit them hard tonight," Trump told reporters at the NATO summit in ​Türkiye before his meeting with Ukrainian President Volodymyr ​Zelenskyy.

In earlier comments to reporters in Ankara, Trump said ⁠a memorandum of understanding that served as an initial ​ceasefire deal between the United States and Iran was "over."

But ​he did not explicitly say Washington would return to full-fledged war, and it was not immediately clear whether the negotiations between the two ​sides to turn the ceasefire into a permanent deal ​would still continue or not.

"I don't know if we're going to have ‌a ⁠deal. We may just do it without a deal," Trump said before his meeting with Zelenskyy.

In a flare-up of hostilities that pushed oil prices up sharply, Iran said it ​had targeted ​US military sites ⁠in Bahrain and Kuwait after US forces struck Iranian targets in response to attacks on ​tankers in the Strait of Hormuz.

The ​renewed hostilities ⁠have also heightened safety and security concerns around the Strait of Hormuz, with shipping data showing at least four oil ⁠and ​gas tankers had turned back rather ​than trying to transit the waterway, a vital supply route.