All the .mil planes in Europe from Germany east have turned off ADS-B. Also UK only has a few helos still broadcasting position.
globe.adsbexchange.com
Click on "U" in top right to show only .mil aircraft.
It's been regularly busy all along the Russian / Ukrainian / Belorussian border for months. Not sure precisely when they switched it off, past few days, possibly today.
Last time this happened was when this started (see post #1)
(This thread has had some entertaining diversions along the way
ADS-B Exchange - track aircraft live
ADS-B Exchange - track aircraft live - aircraft flight history

Click on "U" in top right to show only .mil aircraft.
It's been regularly busy all along the Russian / Ukrainian / Belorussian border for months. Not sure precisely when they switched it off, past few days, possibly today.
Last time this happened was when this started (see post #1)
(This thread has had some entertaining diversions along the way