Estonia's premier raised doubts Friday about the decision of three Baltic states to calculate how much money they lost under some 50 years of Soviet occupation.
The United States called on Russia to release an Estonian intelligence officer who was sentenced to 15 years in prison for spying and weapons possession, calling the charges "baseless."
Estonia's centre-left coalition is poised to return to power in an election marked by nerves in the NATO member over the military resurgence of Russia.
Estonia marked its independence day with a military parade featuring NATO hardware and troops on its eastern border with Russia amid heightened east-west tensions over Ukraine.
Estonian Finance Minister Juergen Ligi announced his resignation after he caused a furore with Facebook comments seen as insulting to the education minister.