Iran’s parliamentary Speaker Mohammad Bagher Ghalibaf has said US President Donald Trump’s recent threats “have no effect on the Iranian nation,” amid escalating tensions over the Strait of Hormuz.

In comments carried by state media, Ghalibaf said Iran had shown “very good initiatives” and goodwill in talks with the United States, which he claimed had led to progress, reports Al Jazeera.

He warned Washington, saying, “If you fight, we will fight, and if you come forward with logic, we will deal with logic.”

Meanwhile, Iran’s Islamic Revolutionary Guard Corps (IRGC) said in a statement that the Strait of Hormuz remains “open to the harmless passage of civilian vessels” in line with international law.

Trump warns of Hormuz blockade as US-Iran talks end without deal

However, it warned that military vessels approaching the waterway would be considered in violation of the ceasefire and “will be dealt with severely.”

The remarks come amid heightened tensions in the Gulf region following US threats of maritime action and growing concerns over the security of the world’s most critical oil shipping route.

US President Donald Trump on Sunday said the US Navy would “immediately” begin a blockade to stop ships from entering or leaving the Strait of Hormuz after US-Iran talks ended without an agreement.

He said he had instructed US naval forces to “seek and interdict” vessels in international waters that have allegedly paid a toll to Iran, warning that “no one who pays an illegal toll will have safe passage on the high seas.”

US Vice President JD Vance said the latest round of marathon negotiations ended without agreement after 21 hours of talks in Islamabad.

While, Iran’s semi-official Tasnim news agency reported that the talks concluded without outcome, citing “excessive demands” from Washington as a key obstacle to a deal.