And Putler is not going to go away, he will bank any gains as a given like Crimea and Eastern Ukraine (All Ukraine?), where it is now a full invasion, being totally ignored by the US and Western Europe, so they don't have to do anything and Putler will then move onto the next targets, which are Georgia and Moldova, to stop them joining NATO and the EU. The Baltic states will then follow, so he has a land bridge to Kalingrad, which will finish NATO at the same time. With no NATO it is then game on to divide and conquer most of the rest of Western Europe where his vision is for an Eurasian superpower, which in his words stretches "from Lisbon to Vladivostok". With the size of the Russian economy, they can never become a Super power at the top table with the US and in a few more years China and India, without the GDP and technology of the majority of Western Europe.
All major wars in the last 250 years have all been started by dictators under 5' 8" in height, Putler in 5' 7".
He has a 2 year timetable, where he knows that Oduma, will appease and avoid wars at all costs and when push comes to shove Obuma will always blink first and that is also how long Russia's $400bn+ foreign currency reserves will last. The next US president will probably be Republican and not so accommodating. Putler only respects strong people and treats Obuma with total contempt where he is the epitome of all that Putler hates as a weak, wet, liberal lefty who thinks laws and courts count. They don't in Putler's eyes where he is busy creating and applying the laws of the Kalashnikov.
Where logic suggests that he will not risk cutting off gas and oil to western Europe for economic reasons, logic also suggested that Putler wouldn't ban food imports where 48% of their food requirements are currently imported. He has for three reasons: Where the EU is the biggest exporter of food to Russia, to try and use dissenting EU countries as a lever. To show the Russian people that the building of the new Russian empire will involve a bit of hardship here and there (he has an 80%+ approval rating from Muscovites on the ban), while they boost domestic production and finally, once he has banked his initial conquests to go on a charm offensive and lift the ban from some EU countries to destroy the EU's united front and when they make concessions on sanctions to stop the disintegration of EU policy as part of his divide and conquer policy, he will then use it for domestic consumption as another victory over the west. Aggressive people out to build empires, set their own rules for everybody else to play by, the Kremlin has always been very good at this and by applying their totally ruthless cold logic, they will create their own luck and success.