Russia retooling it's economy away from oil and towards grain exports.
I'm not sure how this could keep the country afloat: ALL of Russia's economic gains since the fall of Communism have been related to oil exploitation and their fields are producing less and less every year. America and many other countries subsidize the shit out grain to keep it's cost low and we're still shipping tons of it abroad in aid and exports because we just don't have a domestic use for it. This doesn't seem like a viable long term solution, unless they believe global warming is going to ruin a lot of international farmland in the next 20 years.
But it does explain why Ukraine was such a target for them; beyond it's fresh water ports, Ukraine was part of the agricultural heartland of the USSR.
Slowly but surely we're seeing the Western world turning away from oil - it'll take another 20 years or so
at least, but with global warming on one hand and oil scarcity - and being in control of generally not the nicest countries - on the other, and tech moving forward....Any country whose economy is based only on oil and
isn't diversifying is dooming themselves in the medium-long run. Is grain a good plan - I sort of doubt it. But we're still going to need fuel, and, more importantly, complex carbohydrates for a lot of stuff. You can make a car run on solar power or water for all I care, you can't make plastic out of it. You
can make plastics and stuff out of plants and fibers. Having a lot of viable areable land may prove useful. Corn diesel was, is and never will be useful, bamboo or corn or whatever the heck Frankenplant some scientist discovers or builds might become a useful/important/necessary resource. Due to global warming, a lot of currently-areable land may disappear or become expensive to irrigate - water being a scarce resource in large parts of the world. Europe defintely isn't going to grow it; Africa and South-America are still trying their best to turn into deserts as fast as possible; the USA has water issues. Just spitballing here.
All economic thoughts aside - being able to feed your own populace is kind of a big deal - most of Europe
can't (even agricultural countries like France and Greece because they're over-specialized - you can't live off of wine and olives), and imports may prove problematic soon, too, certainly for a country like Russia.