Suwałki Gap: Strategic Bottleneck for Baltic Security (defence24.com)

• The Suwałki Gap is a 100-km corridor between Poland and Lithuania.
• It lies between Belarus and the Russian exclave of Kaliningrad.
• NATO considers it the most vulnerable point on its eastern flank.

"The Suwałki Gap, a narrow strip of land between Poland and Lithuania, is identified as the most vulnerable point on NATO's eastern flank. In any conflict with Russia, control of this corridor is essential to prevent the Baltics from being cut off. The gap lies between Belarus and the Russian exclave of Kaliningrad, making it a prime target for a pincer attack."