SpaceX’s Starlink, Elon Musk’s low-orbit satellite service, has been essential to Ukraine’s operations in the war against Russia. But officials in Kyiv say that Moscow’s forces have been buying satellite internet terminals and using them on the front line in its war against Ukraine, raising questions about what Musk and SpaceX can do, if anything, to shut down the effort.

WSJ explains what we know about how the satellite system works.

0:00 Starlink and Ukraine
0:42 How Starlink works
2:05 How Starlink restricts service
3:07 Challenges

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