The Guardian has more details on the case of the kidnapped Estonian intelligence officer.

The Estonian intelligence official seized by Russia thought he was going to meet an informant in a secluded spot on the border as part of an organised crime investigation but instead walked into an FSB trap, according to Estonian security sources. Eston Kohver went to the arranged meeting at 9am on Friday in woodland near the village of Miikse, about five miles north of the official Luhamaa border post. He had armed backup in the form of Estonian security officers nearby but they were unable to react in time because of the use of flash grenades and because their communications were jammed. By the time they realised what has happening, Kohver had been dragged into the woods on the Russian side of the border by a group of gunmen.

And then there is this, reported by Delfi:

Russia has reopened 25-year-old cases that may lead to criminal charges against young people who refused to serve in the Soviet army in 1990-1991, shows a request for legal assistance received by the Lithuanian Prosecutor General’s Office.
”We have received such request for legal assistance. As the activities, which Russia lists among criminal deeds, is not criminalized in Lithuania, the request for legal assistance will not be processed,” Vilma Mazone of the Prosecutor General’s Office told BNS.
[This concerns] citizens of Lithuania who left the Soviet army or refused to serve there after Lithuania declared independence on 11 March 1990.

As a reminder, that particular declaration of independence was not (as a practical matter) widely recognized, even by countries that had never given anything more than de facto recognition of the original Soviet occupations of Lithuania in 1940 and 1944. Nevertheless that 1990 government was, for all practical purposes (and despite sometimes bloody interference from Moscow), the principal governing authority within Lithuania from then on. The Soviet Union eventually recognized Lithuanian independence in September 1991.

Back to Delfi:

Some of the young men were abducted and transported to Soviet army units by force, some were sent to jail, a few died during persecution by Soviet army officers, while others returned to the Soviet military units in fears for their own or their family’s safety, some escaped the Soviet army by hiding.
… The Lithuanian State Security Department has strongly advised that citizens who obeyed the government’s call and refused to serve in the Soviet army in 1990–1991 not travel to Russia, Belarus and other countries outside the European Union (EU) and NATO for now.

And even travel say, to and from the US, could, I suspect, become problematic if Russia resorts, as it has in the past, to abusing its position in Interpol.

Meanwhile, writing in Estonian World, Sten Hankewitz looks back to the 1930s, and the last years of the independent interwar Estonian Republic:

In the thirties, while actively making preparations for occupying Estonia, Soviet border guards started kidnapping Estonian citizens, mostly fishermen working on Lake Peipus and Lake Pihkva. The aim of those crimes was to get as much information on Estonia’s defence capabilities as possible – even though common fishermen might not have known anything. In August 1936, Soviet border guards kidnapped four Estonian fishermen about a kilometer inside Estonian territory. The men were taken to the Russian side, interrogated for information about Estonian border guard stations and their personnel, Estonians’ general attitude and remuneration, and about the prices of goods in Estonia. A month after that, in September, Russian border guards abducted three Estonian fishermen, again from inside Estonian territory. They were interrogated for information about Estonian border guard stations and police officers.
In December the same year, seven Estonian fishermen were kidnapped, again by the Russian border guards, and again from the Estonian side of the border. They were questioned about the locations of Estonian border guard stations, and whether they had any weaponry. About a month later, in January 1937, eleven Estonians were abducted from Lake Pihkva, and interrogated about the Estonian Army, the Defence League and border guards. They were also asked about the layout of the villages they lived in, and using the data collected from them, the Russian border guards managed to draw detailed maps of those villages.
Altogether, between 1936 and 1937, Soviet Russia abducted 46 Estonian citizens who were taken from Estonia to Russia and interrogated about all aspects of life in Estonia, particularly the armed forces and the Estonians’ general attitude. When deported Estonian officers arrived at the Gulag in 1941, after the Soviet Union had already occupied the country… they found some of the kidnapped Estonian fishermen in the camp. Unfortunately, the Soviet authorities didn’t stop at kidnapping. In February 1938, two Estonian border guards were kidnapped by force from the Estonian side of the border and taken to Russia. The aim of the abduction was to fake an unauthorised border crossing, and to perpetrate that, the Russian border guards murdered their Estonian counterparts in cold blood.

Russia is looking to assert its dominance in the Baltic region, and, in the case of Kohver’s kidnapping, to deliver a message in response to Obama’s speech in Estonia last week. That people in the Baltic have the memories of the past that they do only makes this message all the more alarming. That Russia looks to exploit those memories says everything.