President Trump after signing a National Security Presidential Memorandum and announcing the withdrawal of the U.S. from the Iran nuclear deal. Photo: The Washington Post/Getty Images

Iran has quadrupled its production of low-enriched uranium as of Monday, AP reports, citing Iranian news agencies.

The backdrop: This follows a tweet President Trump posted on Sunday, cautioning that Iran would face its "official end," should the nation threaten the U.S. again. The deepening conflict follows Trump's decision a year ago to unilaterally withdraw from the 2015 Iran nuclear deal. Both Washington and Tehran claim not to want war, however the Trump administration announced deployments of bombers and an aircraft carrier to the Persian Gulf over unspecified Iranian threats earlier in May.

Details: The uranium reportedly has only been enriched to the 3.67% cap established in the 2015 nuclear deal. Iran could soon exceed the stockpile restrictions outlined in the accord. Behrouz Kamalvandi, the spokesperson for Iran’s nuclear agency, said the increase in production does not mean Iran increased the number of centrifuges in use, another requirement of the deal, per AP.

Go deeper: Why war with Iran is suddenly on the table

Go deeper

Exclusive: Conservative group launches $2M Supreme Court ad

Screengrab of ad, courtesy of Judicial Crisis Network.

The Judicial Crisis Network is launching a $2.2 million ad campaign to put pressure on vulnerable Senate Republicans in battleground states to support a quick confirmation when President Trump announces his Supreme Court nominee.

The big picture: "Follow Precedent," previewed by Axios, is one of the first national and cable television ads to run following Justice Ruth Bader Ginsberg's death Friday.

Updated 8 mins ago - Politics & Policy

CDC says it mistakenly published guidance about COVID-19 spreading through air

CDC Director Robert Redfield. Photo: Anna Moneymaker/Pool/Getty Images

The CDC has removed new guidance that acknowledged airborne transmission of the coronavirus, posting in a note on its website that the guidance was only a draft and had been published in error.

Why it matters: The initial update — which was little noticed until a CNN story was published Sunday — had come months after scientists pushed for the agency to acknowledge the disease was transmissible through the air. The CDC previously said that close person-to-person contact was the bigger concern, and the language has been changed back to erase the warning about airborne transmission.

Ruth Bader Ginsburg will lie in state in Capitol's National Statuary Hall

Photo: Getty Images

House Speaker Nancy Pelosi announced Monday that the late Supreme Court Justice Ruth Bader Ginsburg will lie in state in the Capitol's National Statuary Hall on Friday.

The state of play: The Supreme Court also announced Monday that Ginsburg will lie in repose on the front steps of the building on Wednesday and Thursday, allowing the public to pay respects to the late justice outside.