President Biden announced a new rule that would prohibit the unregulated online sale of “ghost guns,” or firearms that you can self-assemble from kits with gun parts. The Bureau of Alcohol Tobacco Firearms and Explosives says that it recovered about 20,000 suspected ghost guns last year, which is ten times more than it did in 2016.

The effort to try Russia for war crimes in Ukraine is picking up pace, and the Biden administration is weighing whether to get involved as well. Alex Whiting, a former prosecutor for the International Criminal Court, joins us to discuss what exactly constitutes a war crime and what investigators are looking at right now.

And in headlines: Philadelphia will reinstate its indoor mask mandate, Finland and Sweden may join NATO, and thousands of Etsy sellers went on strike.

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