In Armenia, Muslim Kurds were often associated with Azeris due to cultural similarities; hence as many as 18,000 Kurds fled from Armenia to Azerbaijan and later to the Russian Caucasus in the late 1980s.[21] In 1992–1993, Armenian troops advanced into Kalbajar, Lachin, Qubadli and Zangilan, forcing all the non-Armenian civilian population out.[22] As much as 80% of the Kurdish population of those regions settled in IDP camps in Aghjabadi.[23]