Article: Suwalki Gap: The Lithuanian nightmare - After the collapse of the Soviet Union, Russia's claim to Kaliningrad was not contested by any government, though some groups in Lithuania called for the annexation of the province, or parts of it.
Russia and Lithuania negotiated the simplified transit regime to Kaliningrad in late 1990s. Initially, Russia pushed for a right to have a military corridor, but Lithuania refused as it would breach the country's sovereignty.