During the winter months there is an ideal time for Ukraine to rotate its troops through rest and training, while strong defensive positions and artillery are fixing the Russians in place and depth strikes are making it difficult for the Russians to prep for future operations except within their own borders.
By supplying Ukraine with Leopard, Bradley, AMX and more HIMARS now it gives the Ukrainians the ability to carry out manoeuver warfare in the late spring / summer.
They will have the ability to position forces quicker than the Russians can and strike in depth, bypassing strongholds, deep into Crimea and all of the Russian MSRs, then pull back and deny Russia the ability to retake the land with long range tubes.
By handing over this kit, Europe is saying its had enough of this nonsense...Putin, get out, or strike with a bucket of sunshine and we are waiting for you.