Any territory taken will have to be deep enough into the Ukraine so that Putin can give part of the territory back in order to claim that he is only interested in peace. This was his tactic in Georgia and it worked. The EU was thankful that Russia returned some of the land he stole from Georgia. He will use the same tactic in Ukraine:
"Russian troops began pulling back from checkpoints in western Georgia ahead of a key deadline in a peace deal brokered by the European Union. But a new diplomatic battle is shaping up over international access to the Russian-backed separatist regions."
"Russia's decision to meet Monday's deadline for pulling out those troops will come as a big relief to European Union foreign ministers, who meet in Brussels Monday to discuss the next steps in EU efforts to resolve the conflict. According to EU diplomats involved in preparations for Monday's meeting, much of that debate and the statement that will come out of it hinge on whether Russia meets the Monday deadline."
Russian Troops Pull Back From Georgia - WSJ
Putin is using many of the same tactics in Ukraine that he used in Georgia. His next move will be to claim that Russian speakers in Eastern Ukraine are at risk and he has no choice but to send Russian troops to protect them.
If this tactic is repeated there will be more than enough territory and companies to rob or tax in order to pay for a separatist militia.
Actually, claims about Russian speakers in E. Ukraine being threatened won’t be the next move, just because the Russian rulers have already been claiming that almost from the beginning of the Euromaidan.
I browsed the Internet and found some information.
Russian PM Medvedev said in the August of 2014 that Russia would spend 700 billion roubles in the course of five years in Crimea’s development, including 660 billion from the federal budget. He didn’t specify whether the costs on the bridge were included in the figure. Okay, we will think that they were. The costs on the bridge are supposed to be no more than 230 billion roubles. So, the spending without the bridge will be at the tune of 470 billion roubles. The total population of Crimea is approximately 2.3 million. So, annual share of every Crimean will be: 470 bln / 2.3 mln / 5 years = 40 870 roubles.
Considering even that that in Crimea hasn’t been war in the last years and considering that the Russian troops placed here are financed directly from Moscow, the Russian government is unable to find money within Crimea (through taxes, for example) to finance reforms. So, almost 95 per cent of the money will come from federal budget.
I don’t know how many people will live in the corridor-related territory, but I think that the amount of spending per person will be even higher than Crimean’s – because there will be a war, there will be destructions of enterprises, and so on. So, what makes you think that taxes from locals will save Putin’s money?
And what about money which Russia will lose as a result of additional sanctions which will be imposed on it if its rulers decide to wage a war? Or there will be no further economic sanctions?