Highlights from an overview of the NSA’s new document explaining the rules that govern the collection of signals intelligence.

The US policy of “defend forward” and “persistent engagement” in cyberspace raises the stakes of this attribution question as a matter of both international and domestic law. 

Various theories have been proposed for the U.S. to rejoin the Open Skies Treaty without presenting it again to the Senate for advice and consent to ratification; some are legally unsupportable, while ot...

A review of “His Very Best: Jimmy Carter, A Life” by Jonathan Alter (Simon & Schuster, 2020)

President-elect Biden is expected to initiate the process of rejoining the Paris Agreement on Inauguration Day. But the hard part will be coming up with a quantitative statement of how and by how much U....

Russia launched SolarWinds—the latest in a long series of hostile Russian cyber operations—not because the U.S. has engaged too proactively in cyberspace. Quite the opposite; it did so, very simply, beca...

Though the facts of precisely what happened at the Capitol are still coming to light, it seems likely that prosecutors could file felony murder charges against at least some of the rioters.

Social media companies should develop emergency protocols to counter the exploitation by malign agents and states that seek to foment violence.