Supplies and auxiliaries are natural targets in war, so it's no surprise that Russia is now trying to clamp down on foreign military aid to Ukraine.
Apparently, foreign volunteers were being trained at the base that was targeted for an attack on Sunday night, and there were foreign trainers there.
The fact that NATO has assured that it has no personnel in Ukraine does not make things any easier for the West.
The Jaworiw base is not far from the Polish border.
If Moscow, as announced, also targets arms deliveries from the West, then there could be further attacks near NATO's eastern border.
Putin's military problems
Don't let yourself be provoked here, but don't be intimidated either.
The further the war progresses, the more likely it becomes that Russian troops will also advance into the western part of the country.
In view of his current military problems and the strength of the alliance, even for a daring general like Putin it would be an almost unmanageable undertaking if he were to enter into a confrontation with NATO.
The West should stick to its strategy: a visible and credible defense of the eastern flank, accompanied by indirect support for Ukraine.
There is little point in imagining new scenarios in which NATO could intervene directly, as the Polish President has done again.
The political will to do so is lacking, especially in Washington.
The aim is to contain the conflict, not to escalate it.
On the diplomatic front, differences between Western and Ukrainian negotiators are becoming apparent for the first time.
While Parisians may not see Putin's willingness to compromise, Zelenskyy emphasized that the Russians were no longer issuing ultimatums.
At worst, this is one of Putin's feints; at best, it's a sign that the costs are too high for the Kremlin.