GENEVA (AP) — Iran announced the temporary closure of the Strait of Hormuz on Tuesday for live fire drills in a rare show of force as its negotiators held another round of indirect talks with the United States over the Islamic Republic's disputed nuclear program.

It was the first time Iran has announced the closure of the key international waterway, through which 20% of the world’s oil passes, since the U.S. began threatening Iran and rushing military assets to the region. It was not immediately clear if the strait had been closed, but such a rare and perhaps unprecedented move could further escalate tensions that threaten to ignite another war in the Middle East.

As the talks began, Iran’s state media announced that Iranian forces had fired live missiles toward the strait and would close it for several hours for “safety and maritime concerns.”

Supreme Leader Ayatollah Ali Khamenei meanwhile warned that “the strongest army in the world might sometimes receive such a slap that it cannot get back on its feet."

Iranian diplomat sees ‘new window’ in talks

Iran's foreign minister later adopted a different tone, expressing optimism about the talks and saying “a new window has opened" for reaching an agreement.

“We are hopeful that negotiations will lead to a sustainable and negotiated solution which can serve the interests of relevant parties and the broader region,” Abbas Araghchi told a U.N. disarmament conference after leading the Iranian delegation at the talks held in Geneva.

He added that Iran "remains fully prepared to defend itself against any threat or act of aggression,” and that the consequences of any attack on Iran would not be confined to its borders.

He made no specific mention of the military drills or the closure of the Strait of Hormuz.

U.S. President Donald Trump, who scrapped an earlier nuclear agreement with Iran during his first term, has repeatedly threatened to use force to compel Iran to agree to constrain its nuclear program. Iran has said it would respond with an attack of its own. Trump has also threatened Iran over the killing of protesters.

Source: WPLG