A battalion tactical group (BTG) is a military unit capable of independently carrying out combat operations. The core of BTGs – battalions – are supplemented by supporting elements from other units. Typically, there are 700–900 soldiers in a BTG.
In addition to the increase in the number of troops in the Baltic operational direction, new weapon systems placed in Kaliningrad and near the Estonian-Latvian border also pose a threat to Estonia. With these weapons, like Iskander, sea or air-based cruise missiles, etc., Russia would be able to isolate Estonia from its allies and attack critical targets preventing NATO support from being able to reach Estonia.
«Russian military planning is paying increasing attention to attacks against critical targets. In the Baltic countries, such targets may include infrastructure that is linked to the reception or servicing of NATO reinforcement. However, the use of tactical nuclear weapons against Estonian targets or NATO units located here is highly unlikely,» it is written in the yearbook.
The report also states that developments in Kaliningrad and Belarus are also important factors from the perspective of Estonia's security.