Iran quadruples its production of enriched uranium

TEHRAN, Iran— Iran quadrupled its uranium-enrichment production capacity amid tensions with the U.S. over Tehran’s atomic program, nuclear officials said Monday, just after President Donald Trump and Iran’s foreign minister traded threats and taunts on Twitter.

Iranian officials made a point to stress that the uranium would be enriched only to the 3.67 percent limit set under the 2015 nuclear deal with world powers, making it usable for a power plant but far below what’s needed for an atomic weapon.

But by increasing production, Iran soon will go beyond the stockpile limitations set by the accord. Tehran has set a July 7 deadline for Europe to come up with new terms for the deal, or it will enrich closer to weapons-grade levels in a Middle East already on edge. The Trump administration has deployed bombers and an aircraft carrier to the region over still-unspecified threats from Iran.

The Iranian enrichment announcement came after local journalists traveled to Natanz in central Iran, the country’s underground enrichment facility. There, an unidentified nuclear scientist gave a statement with a surgical cap and a mask covering most of his face. No one explained his choice of outfit, although Israel is suspected of carrying out a campaign targeting Iranian nuclear scientists.

The state-run IRNA news agency later quoted Behrouz Kamalvandi, the spokesman of the Atomic Energy Organization of Iran, as acknowledging that capacity had been quadrupled. He said Iran took this step because the U.S. had ended a program allowing it to exchange enriched uranium to Russia for unprocessed yellowcake uranium, as well as ending the sale of heavy water to Oman. Heavy water helps cool reactors producing plutonium that can be used in nuclear weapons.

Kamalvandi said Iran had informed the International Atomic Energy Agency, the U.N. nuclear watchdog, of the development. The Vienna-based agency did not respond to a request for comment. Tehran long has insisted it does not seek nuclear weapons, though the West fears its program could allow it to build them.

Before Iran’s announcement, Trump tweeted: “If Iran wants to fight, that will be the official end of Iran. Never threaten the United States again!”

Trump’s remarks reflect what has been a strategy of alternating tough talk with more conciliatory statements he says is aimed at keeping Iran guessing at the administration’s intentions. He also has said he hopes Iran calls him and engages in negotiations.

Iranian Foreign Minister Mohammad Javad Zarif soon responded by tweeting that Trump had been “goaded” into “genocidal taunts.” Zarif referenced both Alexander the Great and Genghis Khan as two historical leaders that Persia outlasted.

“Iranians have stood tall for a millennia while aggressors all gone,” he wrote. “Try respect — it works!”