Pentagon spokeswoman Dana White. Photo: Yasin Ozturk / Anadolu Agency / Getty Images

The Pentagon on Thursday responded to Russian President Vladimir Putin's announcement that Russia has an "invincible" nuclear arsenal by stating that the United States is "fully prepared" in the event that Russia launched a nuclear attack. Pentagon spokeswoman Dana White told reporters, "This is not about defense. This is about deterrence."

The backdrop: In a speech earlier today, Putin said that Russia had tested new nuclear weapons, including a new missile and an underwater drone. The Russian president made the announcement at his annual state of the nation address in Moscow — his last speech before Russia's presidential election on March 18.

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Arrest over letter to Trump containing poison ricin

President Trump returning to the White House from Minnesota on Sept. 18. Photo: Win McNamee/Getty Images

A suspect was arrested for allegedly "sending a suspicious letter" after law enforcement agents intercepted an envelope addressed to President Trump containing the poison ricin, the FBI confirmed in an emailed statement to Axios Sunday.

Details: The suspect, a woman, was arrested while trying to enter New York from Canada, law enforcement forces said.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 7 p.m. ET: 30,881,522 — Total deaths: 958,493— Total recoveries: 21,119,006Map.
  2. U.S.: Total confirmed cases as of 7 p.m. ET: 6,794,479 — Total deaths: 199,469 — Total recoveries: 2,590,671 — Total tests: 95,108,559Map.
  3. Politics: Testing czar on Trump's CDC contradictions: "Everybody is right" Ex-FDA chief: Career scientists won't be "easily cowed" by political vaccine pressure.
  4. Education: What we overlooked in the switch to remote learning.
  5. Health: The dwindling chances of eliminating COVID-19 — 7 states set single-day coronavirus case records last week.
  6. World: England sets £10,000 fine for breaking self-isolation rules — The countries painting their pandemic recoveries green.

Trump campaign goes all in on Pennsylvania

Trump poster in Scranton, Pennsylvania. Photo: Robert Nickelsberg/Getty Images

The president's campaign is placing more importance on Pennsylvania amid growing concern that his chances of clinching Wisconsin are slipping, Trump campaign sources tell Axios.

Driving the news: Pennsylvania, which has 20 electoral votes, twice Wisconsin's number, actually has been trending higher in recent public and internal polling, a welcome development for the campaign.