If you are following orders you will head for a designated recovery spot which could be a NATO country or somewhere in the USA. If all of your alternates are toasted, then try for anyplace in a friendly country that could take your aircraft and refuel you. If everything has gone to crap, a lot depends on where you are. Some of the zones in the USA will be relatively safe, and if you can't land there will be a friendly population when you bail out. If that fails, well try and get south of the equator to someplace that speaks English if you can, which is friendly to the US/NATO. The number of nuclear hits south of the equator will be minimal so fallout issues will be minimal.