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Russia has previously failed to "gain air superiority over Ukraine".
The MoD claims the intense losses Moscow has faced have "drastically undermined" its armed forces.
From "corporate bankruptcies", to reports of butter theft and huge potato inflation, pressures on Russia continue.
Putin's army decided to shoot down one of their own drones, according to Western intelligence.
The Russian president's display may not have been what it seemed.
It comes amid growing concern in Russia about a lack of training for new troops.
The UK's MoD added that there are many in Russia who want to destroy "Ukrainian culture, identity and statehood".
But the MoD does not think the new measures are related to Ukraine's shock incursion.
Moscow hasn't taken a break like this for the last six months.
Very few of these modern planes have fallen in the course of the war so far.