1 September 2005 -- Russia today pulled out of recently signed land- and sea-border demarcation treaties with Estonia in a dispute over an addition to the accords.
Russian President Vladimir Putin signed an order declaring Russia will "not become party" to the treaties.
The accords were signed on 18 May but ran into controversy when the Estonian parliament added a preamble that angered Moscow.
On 7 July, the former Soviet republic turned down a Russian request for new talks, saying agreement had been reached and there was no need for any changes.
Moscow is opposed to the preamble making a reference to the Soviet occupation of Estonia. Russia said that is unacceptable and will prevent its parliament from ratifying the treaty.
Estonia, which became part of the Soviet Union after World War II, regained independence in 1991 and joined the European Union and NATO last year.