soviet union was sparked by the success of a -- pro democracy here in poland, a pro democracy movement here in poland. you will remember, it the solidarity movement. it began as labor strikes in a polish shipyard and quickly grew into a national phenomenon under its charismatic leader, let valencia. the communist government in poland being forced into compromises with these democratic labor activists. and the soviet union did not like that one bit. in the end, though, the soviet union did not need to invade poland. the communist polish government declared martial law and staged its own military invention. protests were brutally put down. demonstrators were killed. thousands of opposition activists were in prison. but that was not the end of the story. actually, it was just the beginning of the story. because the solitary movement was not destroyed. it operated underground through years of repression, until it burst back into the open in the