http://www.faqs.org/cia/docs/36/0000222079/IMPLICATIONS-OF-A-SOVIET-INVASION-IN-POLAND.html
http://en.wikipedia.org/wiki/Bydgoszcz_events
http://en.wikipedia.org/wiki/1981_warning_strike_in_Poland
I might have been thinking about this operation the wrong way. The Soviet Armed Forces ALREADY have military access into Poland, performing a military exercise--Soyuz 81. THIS, perhaps with covert modifications, is going to be the basis of the Soviet Military attack.
I'm suspecting that we may have to reconsider the PoD; The Soviet Union would order the operation, but no invasion is technically needed. In this case, the Soviet Union "modifies" these exercises to send many more forces into Poland; and then once in position, these guys just jump into the country.
the TL is likely to look like this:
Soviet Union Decides to Shut Down Solidarity
Kania is pressured to go along with it.
Soyuz 81 is increased in scope and size; Solidarity might respond with civil measures, but I think the Soviet Army is going to be able to nip it in the bud.
Purge of Solidarity; Purge of disloyal army elements; Massive Strikes in Poland. It is over quickly, but the costs are huge.
West: Gets furious and sets up a grain embargo; as a modification to my previous threat--the West Pressures Argentina to stop grain shipments to the Soviets.
Cost to the Soviet Union? Another 4B$ a year in rebuilding costs; no ability to rely upon the Polish Army for five years; Polish defiance leading to deliberate idleness and therefore, a massive reduction of output likely.
I'm thinking we may have overthought this one--it is simply not as big in terms of military scale as considered. I'd throw out the threat of NATO mailing in troops, but I know Reagan might well go after Nicaragua.
There will probably be mass arrests; serious resistance by striking unions and polish nationalists--but when has the Soviet Union ever really cared about not just shooting them all? Not pleasant, but the Soviet Union takes down Solidarity, but as the CIA report suggests, they suffer a major propaganda hit and a major financial loss. Western Europe probably doesn't accept the oil pipeline from Russia, and grain imports are going to really hurt the Soviets.
I'm not at all sure that Faeelin is right about the Soviet Food situation. I respect that they were close to the bone, but surely this can be addressed by dedicated more resources to agriculture? There are no shortage of Technocrats out to do things the better way in the Soviet Union. That said, the tab of having to greatly expand food supplies domestically, combined with an ongoing military occupation and a military campaign in Afghanistan is going to be hard to handle.
I'm thinking that the weak link of this scenario, at this point, is how this turns into a serious Polish-Soviet military conflict. The Soviets have access to Moscow and Gdansk without shooting Polish troops to get there. So Kania asks for help, the Soviets aren't on the border, they're on the outskirts of town.
It may well be a PoD like Walesa calls for a General Strike after further atrocities break out...