Why did Putin introduce martial law only in the occupied territories?

Why did Putin introduce martial law only in the occupied territories, and not throughout Russia? There are several reasons.

1. First and foremost: Putin is not confident in the success of the military campaign. It is because of this uncertainty that he tries to leave room for maneuver by making half-hearted decisions.

2. Russia's strategy to shift the main burden of the war to the occupied regions of Ukraine and the foolish collaborators from Crimea and the self-proclaimed Donetsk and Luhansk People’s Republics will only intensify. In order not to mobilize Moscow citizens, the entire Donbas will be sent to the front, en masse, regardless of the level of training and subservience to the occupiers.

3. Intimidation and bargaining. Putin continues to bargain with the West while trying to intimidate that he is still not at war. It's funny, because everyone has already seen the real power of Russian weapons and drawn conclusions. But the bunker old man does not stop trying to force himself some gesheft.

4. No matter what anyone says, Putin is panicking about the fatigue of Moscow from the war. Thinking logically, martial law should also be introduced in the border regions of Kursk, Belgorod, Rostov, and Voronezh, where there are blasts and missiles fly regularly. But, just as he put off mobilization until the last, Putin is putting off the unpopular introduction of martial law in Russia until the last. The fatigue of the Russians from the heavy and bloody war of aggression, which brings nothing but losses to them personally, endangers his power. He is afraid of it.

5. The last factor limiting the state of war in the occupied territories is the attempt to sell the worn-out record "we haven't started yet" to its citizens. So far it works, but the clock is ticking.