Russia is expanding military infrastructure near its borders with NATO countries, particularly near Finland, with capacity to accommodate tens of thousands of additional troops. The buildup has been confirmed by multiple credible sources including independent investigations and Western analysts. The exact scale of the infrastructure projects remains somewhat unclear from available reporting, though sources consistently point to a significant expansion rather than a specific documented figure. The infrastructure appears designed to host new large military formations as part of Russia's broader military posture along the expanded NATO border.