sentences:  The Baku–Tbilisi–Ceyhan pipeline and South Caucasus Pipelines, which pass through the region, have met opposition from local Armenians, as well as the planned Kars–Tbilisi–Baku railway, as it isolates Armenia.The Autonomous Republic of Abkhazia also has a significant population of Armenians, where they make up roughly 20% of the population.They are the second largest ethnic group in the region of Abkhazia after the Abkhazians.