According to the report, the main problems are logistics, lack of staff and supplies.
“NATO's ability to logistically support rapid reinforcement in the much-expanded territory covering SACEUR's (Supreme Allied Commander Europe) area of operation has been atrophied since the end of the Cold War," the report reads.
The NATO countries have grown uneasy about Russia since its occupation of the Ukrainian Crimea in 2014, and the ongoing military intervention in the Eastern Ukraine.
This September Russia and Belarus held a joint military exercise, the name of which, translated into English, seems rather ominous: West-2017. More soldiers participated in the drills than had been stated and there are reasons to believe the drills trained for an offensive, even though the organizers claimed the drills’ were designed for defence.