Military personnel in protective gear investigate the scene of the nerve agent attack in Salisbury. Photo: Adrian Dennis / AFP via Getty Images

The United Kingdom has called for an urgent meeting of the United Nations Security Council this afternoon to discuss the use of a Russian-manufactured nerve agent against ex- spy Sergei Skripal and his daughter on British soil, per the BBC. And, during a speech to the House of Commons later this morning, Prime Minister Theresa May is expected to announce a "significant" expulsion of Russian diplomats, according to Sky News.

The big picture: After May declared it "highly likely" that Russia was behind the attack during a speech on Monday, she gave the Kremlin a deadline of midnight last night to provide an appropriate response. Russia — at least publicly — continued to deny its involvement in the attack via a series of incendiary social media posts, prompting today's response from the U.K. Also today, all 29 NATO countries have asked Russia to answer the U.K.'s questions in a joint statement, per AFP's Danny Kemp.

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Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 9:45 p.m. ET: 19,282,972 — Total deaths: 718,851 — Total recoveries — 11,671,491Map.
  2. U.S.: Total confirmed cases as of 9:45 p.m. ET: 4,937,441 — Total deaths: 161,248 — Total recoveries: 1,623,870 — Total tests: 60,415,558Map.
  3. Politics: Trump says he's prepared to sign executive orders on coronavirus aid.
  4. Education: Cuomo says all New York schools can reopen for in-person learning.
  5. Public health: Surgeon general urges flu shots to prevent "double whammy" with coronavirus — Massachusetts pauses reopening after uptick in coronavirus cases.
  6. World: Africa records over 1 million coronavirus cases — Gates Foundation puts $150 million behind coronavirus vaccine production.

Warren and Clinton to speak on same night of Democratic convention

(Photos: Abdulhamid Hosbas/Anadolu Agency via Getty Images, Sean Rayford/Getty Images)

Sen. Elizabeth Warren and Hillary Clinton both are slated to speak on the Wednesday of the Democratic convention — Aug. 19 — four sources familiar with the planning told Axios.

Why it matters: That's the same night Joe Biden's running mate (to be revealed next week) will address the nation. Clinton and Warren represent two of the most influential wise-women of Democratic politics with the potential to turn out millions of establishment and progressive voters in November.

Trump considering order on pre-existing condition protections, which already exist

Photo: Jim Watson/AFP via Getty Images

President Trump announced on Friday he will pursue an executive order requiring insurance companies to cover pre-existing conditions, something that is already law.

Why it matters: The Affordable Care Act already requires insurers to cover pre-existing conditions. The Trump administration is currently arguing in a case before the Supreme Court to strike down that very law — including its pre-existing condition protections.