Photo: Alexey Nikolsky/AFP/Getty Images

Russian President Vladimir Putin has invited President Trump to Moscow, Reuters reports, adding that while he and Trump are ready to pick up where they left off in Helsinki, the conditions must be right for a meeting to take place.

Trump said on Friday he is "open to visiting Moscow," the Associated Press reports, after he receives a "formal invitation" from Putin.

The backdrop: Trump initially invited Putin to the White House for a summit in the fall, but the potential meeting was delayed by national security adviser John Bolton. He said in a statement on Wednesday that Trump "believes that the next bilateral meeting with President Putin should take place after the Russia witch hunt is over, so we've agreed that it will be after the first of the year."

Why it matters: The relationship between the two leaders has stunned many in Washington, and their Helsinki summit has drawn criticism from people across the political spectrum — even those typically supportive of the president. But Trump continues to insist that positive relations with Russia is a good thing, and additional talks between them is his way of proving it.

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Updated 49 mins ago - Politics & Policy

Supreme Court clears way for first federal execution since 2003

Lethal injection facility in San Quentin, California. Photo: California Department of Corrections and Rehabilitation via Getty Images

The Supreme Court ruled early Tuesday that federal executions can resume, reversing a lower court decision and paving the way for the first lethal injection since 2003 to take place at a federal prison in Indiana, AP reports.

The big picture: A lower court had delayed the execution, saying inmates had provided evidence the government's plan to carry out executions using lethal injections "poses an unconstitutionally significant risk of serious pain."

2 hours ago - Health

More Republicans say they're wearing masks

Data: Axios/Ipsos poll; Chart: Andrew Witherspoon/Axios

Nearly two-thirds of Americans — and a noticeably increasing number of Republicans — say they’re wearing a face mask whenever they leave the house, according to the latest installment of the Axios-Ipsos Coronavirus Index.

Why it matters: A weakening partisan divide over masks, and a broad-based increase in the number of people wearing them, would be a welcome development as most of the country tries to beat back a rapidly growing outbreak.

Buildings are getting tested for coronavirus, too

Illustration: Eniola Odetunde/Axios

Testing buildings — not just people — could be an important way to stop the spread of the coronavirus.

Why it matters: People won't feel safe returning to schools, offices, bars and restaurants unless they can be assured they won't be infected by coronavirus particles lingering in the air — or being pumped through the buildings' air ducts. One day, even office furniture lined with plants could be used to clean air in cubicles.