Philip Ewing

Philip Ewing is NPR's national security editor. He helps direct coverage of the military, the intelligence community, counterterrorism, veterans and other topics for the radio and online. Ewing joined the network in 2015 from Politico, where he was a Pentagon correspondent and defense editor. Previously he served as managing editor of Military.com and before that he covered the U.S. Navy for the Military Times newspapers.

Last week in the Russia investigations: Washington, D.C., gears up for the big show; Trump campaign data firm's guru tried to link up with WikiLeaks; and Clinton, DNC helped pay for infamous dossier on Trump.

Get Ready For The Big Show

After weeks of buildups, letdowns, surprises, scoops and headlines, this is it: Three central players in the world of Big Tech are set to face off across the witness table this week from members of Congress.

Nations waged campaigns of influence against each other for centuries before Russia's interference in the 2016 U.S. presidential election, and nothing is likely to stop them anytime soon.

Congress could mandate more "disclosure" for foreigners buying ads on U.S. social networks, but that wouldn't stop the ads from being sold, nor would it address the covert part of the Russians' playbook — the cyberattacks, snooping and dumping of embarrassing information.

Updated Oct. 25 at 1:42 p.m. EDT

Twitter has promised more disclosure about its advertisements as members of Congress put the big social networks under a microscope in investigating Russian interference in U.S. politics.

The San Francisco-based microblogging service said Tuesday that it plans to unveil an "industry-leading transparency center" through which it will "offer everyone visibility into who is advertising on Twitter, details behind those ads" and tools through which users can respond.

This week in the Russia investigations: Facebook hits Washington with a P.R. blitz, the imbroglio sucks in more tech giants and the White House weighs how nicely — or rudely — to treat Robert Mueller.

Sandberg leans in to damage control mode

Facebook Chief Operating Officer Sheryl Sandberg is a billionaire titan of Big Tech who looks down on the world from the peak of empire — but she tried to sound as contrite as she could this week in Washington.

Shortly before Election Day last year, some helpful-looking posts began popping up on Twitter: No need to stand in line or even leave home, they said — just vote by text!

The messages, some of which appeared to come from Hillary Clinton's campaign, had versions in Spanish, with gay pride flags and other permutations. They were also 100 percent false.

Where did they come from?

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