Ayatollah Ali Khamenei. Photo: Iranian Supreme Leader Press Office/Handout/Anadolu Agency via Getty Images

Iran's government announced Sunday that it would no longer abide by any limits on its enrichment of uranium, according to Iranian state TV.

Why it matters: This could be the final blow to the 2015 Iran nuclear deal negotiated by the Obama administration, raising the risk that Iran will move toward a nuclear weapon. However, Iran has said it will continue to allow inspections by the International Atomic Energy Agency (IAEA) and is prepared to return to compliance with the deal if the U.S. removes sanctions.

Context: President Trump withdrew the U.S. from the deal in May 2018, setting off a chain of events that have seen tensions rise to the point where the two countries may now be on the brink of war.

  • European leaders have attempted to mediate in order to keep constraints on Iran's nuclear program intact.
  • The Trump administration says its goal is to force Iran to negotiate a more comprehensive deal, though that seems a remote prospect given the current realities.

Between the lines: Iran's decision to not immediately raise its enrichment levels to 20% and allow the IAEA to maintain inspection access is notable. Some experts, including the European Council on Foreign Relation's Ellie Geranmayeh, view the move as Tehran leaving open a "narrow window for diplomacy."

  • The Crisis Group's Iran expert Ali Vaez adds: "Iran’s decision to put aside the cap on the # of centrifuges as its 5th step away from its JCPOA commitments is less harsh than the initially feared resumption of 20% enrichment. This shows Iran still wants the Europeans on its side and doesn’t want to break the deal yet."

Go deeper: Trump's threat to target cultural sites sparks Iranian furor

Go deeper

Updated 33 mins ago - Politics & Policy

Tim Scott says Trump "misspoke" when he told Proud Boys to "stand by"

Photo: Bonnie Cash/Pool/AFP via Getty Images

Sen. Tim Scott (R-S.C.) told reporters on Wednesday that he believes President Trump "misspoke" when he told the far-right "Proud Boys" group to "stand back and stand by" in response to a question about condemning white supremacy at the first presidential debate.

Catch up quick: Moderator Chris Wallace asked Trump on Tuesday, "Are you willing, tonight, to condemn white supremacists and militia groups and to say that they need to stand down?" Trump asked who specifically he should condemn, and then responded, "Proud Boys, stand back and stand by. But I'll tell you what, somebody's got to do something about antifa and the left."

Updated 41 mins ago - Politics & Policy

Commission on Presidential Debates wants changes

Photos: Jim Watson and Saul Loeb/AFP via Getty Images

The Commission on Presidential Debates announced Wednesday that it plans to implement changes to rules for the remaining debates, after Tuesday night's head-to-head between Joe Biden and Donald Trump was practically incoherent for most of the night.

What they are saying: "Last night's debate made clear that additional structure should be added to the format of the remaining debates to ensure a more orderly discussion of the issues," the CPD said in a statement.

Trump says he doesn't know who Proud Boys are after telling them to "stand by"

President Trump told reporters on Wednesday that he doesn't know who the Proud Boys are, after saying at the presidential debate last night that the far-right group should "stand back and stand by" in response to a question asking him to condemn white supremacists.

Why it matters: The comments set off outrage and calls for clarification from a number of Republican senators. After being asked several times on Wednesday whether he will condemn white supremacy, Trump responded, "I have always denounced any form — any form of any of that, you have to denounce. But I also — Joe Biden has to say something about antifa."