Retake Crimea

It is the eve of Russia's 2022 invasion of Ukraine.  You must figure out how to husband Ukraine's limited resources to hold off the Russians.  You must also manage Ukraine's relations with the rest of the world to secure the resources needed to resist the Russians, and eventually recapture Russian occupied territory.  This last task will be a challenge for three reasons: 1) the Ukrainian economy is collapsing, 2) Russia is a key energy supplier to one of the world's largest economies, and 3) Russia has a LOT of nuclear weapons.  You also need to shut down the supply chain that allows Russia to build the precision long-range weapons that are devastating Ukraine's economy.  Good luck!