Quote: "On the summit’s first day, Gorbachev lamented the sad state of his economy and ..."
Communist economy was a bankrupt one, based on pillaging, not by producing anything new and good. Their "golden" years, of 50's and 60's was based on actually pillaging all the Eastern Bloc countries and leave them poorer. In every single country the USSR imposed an export-import type of firms, that "imported" Russian stuff, old and outdated from the 20's and 30's which were valued like they were the latest and greatest and exported that country best resource (be it gold, oil or grain). Once those resources were pillaged so the USSR economic decline started.
For more than 4 decades this was slavery with extra steps. So yeah, the Russians are hated by every single former Eastern Bloc country, because we did not forget their heavy boot throughout of "red enlightenment" era.