General Mark Milley, chairman of the U.S. Joint Chiefs of Staff, has been carrying a map of Ukraine with him everywhere he goes, Washington Post columnist David Ignatius reports in a piece that looks at U.S. intelligence gathering and work with its allies during the Russian invasion of Ukraine.

Milley’s map is a compendium of U.S intelligence about Russia’s pitiless assault on Ukraine. The paper version isn’t actually big or particularly fancy, just a foot-square chart showing the locations, numbers and likely assault paths of the vast Russian force battering Ukraine. But the map documents what Milley, the chairman of the Joint Chiefs of Staff, and his top aides believe might be the most comprehensive operational intelligence in the history of warfare. […]

Milley ordered aides to begin assembling the map in late October, when startling intelligence reports signaled that Russia was gathering an invasion army on Ukraine’s border. The Russian forces were no exercise; intercepted messages showed that Russia was actually planning an attack.

Of course we can’t get a look at Gen. Milley’s map. Classified.