^those new territories of western russia will serve as a buffer zone against NATO EXPANSION and will be a hot zone for the next years to come. it need to be secured, hence the mobilization of 300,000 boots
the russian special forces who worked hard to capture those new territories will need to rest before the next big thing happens that could engulf europe into much larger conflict should US-NATO choose to directly engage russian forces
eventually, US-NATO will realize that ukrainian forces are not good in the battle-field even with possession of advanced weapons from them and lose face