Tensions in the standoff between the U.S. and Iran over the Strait of Hormuz intensified Friday after U.S. President Donald Trump said he ordered the U.S. military to “shoot and kill” Iranian small boats in the strait, while Iran pushed back on Trump's claim there was a leadership rift in the Islamic Republic.

“In Iran there are no ‘hardliners’ or ‘moderates’. We are all Iranians and revolutionaries,” Iran’s President Masoud Pezeshkian and Speaker of Parliament Mohammad Bagher Qalibaf wrote in almost identical social media statements.

Since the killing of Supreme Leader Ali Khamenei in the first strike of the war on Feb. 28, it has been unclear who in Iran wields ultimate authority over its collection of civilian figures and powerful generals who appear to be in charge.

Trump also said Thursday evening that Israel and Lebanon agreed to extend a ceasefire between Israel and Hezbollah by three weeks after talks at the White House.

The standoff between the U.S. and Iran has effectively choked off nearly all exports through the Strait of Hormuz, where 20% of the world’s traded oil passes in peacetime, with no end in sight.

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European Union foreign policy chief Kaja Kallas said peace negotiations between the United States and Iran are at risk of forging a “weaker” agreement than one struck a decade ago.

“If the talks are only about the nuclear (issue) and there are no nuclear experts around the table, then we will end up with an agreement that is weaker than the JCPoA was,” Kallas said Friday in Cyprus, referring to a 2015 deal struck during the Obama administration that Trump pulled the U.S. out of in 2018.

Kallas said if negotiators do not table Iran’s “missile programs, their support to proxies, and also hybrid and cyber activities in Europe” there is a possibility “we will end up with a more dangerous Iran.”

A medical aid convoy left Turkey headed for Iran, an official told Turkey’s state-run Anadolu news agency on Friday.

The six trucks departed Van in eastern Turkey to pass through the Gurbulak border crossing, Van Health Director Muhammed Tosun said.

“The materials include medicines and medical supplies,” Tosun said.

“We previously sent three trucks. With today’s trucks, a total of nine trucks of aid materials will have been delivered to our Iranian colleagues to serve their citizens,” he said.