Груз 200
I have seen it - good movie

Russia paid the whole ex-USSR debt (including Latvian)
You break it - you buy it :P .
It was Russian own decision to be the USSR successor state (and retain privileges like permanent position in UN Security Council)
Commies for example did not want to pay for Tsar's debts.

You are biting a hand which feeds you
Russia is a one of the major Latvian importers/exporters (10%/14%)
I do not want Russia ruined or something.
I would like Russian government to treat it's citizens well and to be friendly to it's neighbors.
Like Germany - they dropped their imperialistic ambitions and do not want to conquer/oppress their neighbors anymore.
They paid compensations to nazi victims (especially Israel).
And now Germany is one of the best places in the world to live in.