The survey of bridges was carried out on foot along the main road linking East and West in southern Estonia, according to a NATO counter intelligence report completed in the spring of 2015.
The NATO report, obtained by aldrimer.no, is based on information from Estonian counterintelligence, probably from the Estonian Internal Security Service Kaitsepolitseiamet (KaPo) or from a military counter intelligence unit within the Estonian defense forces.
Over «the last few months Russian diplomatic personnel have done systematic on foot analysis of the major bridges in the major East-West corridor in the south of Estonia,» the document says.
«The bridges are located along the major highway running from the Russian border to the Baltic Sea.
Just east of the Russian border crossing point is a Russian airborne brigade and a Russian helicopter brigade meant to support the airborne brigade,» the NATO report says.
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