In spite of intermittent rapprochement, Turkey was hostile to Bulgaria through most of the 1980s because of Zhivkov's mistreatment of Bulgarian Turks and the economic hardship caused in Turkey by mass immigration of Turks from Bulgaria in 1989. The last rapprochement, a protocol of friendship in early 1988, was signed by Bulgaria to defuse international criticism of its ethnic policy. That agreement dissolved rapidly in 1988, when Turkey saw no change in Bulgarian ethnic assimilation; by 1989 Turkey was vowing to defend the Turkish minority, while Bulgaria claimed that its "Turks" were all Bulgarians converted to Islam under the Ottoman Empire (see The Turkish Problem , this ch.).
The ouster of Zhivkov and subsequent Bulgarian commitment to repatriate deported Turks and grant them full human rights brought a marked change in Turkish policy. Despite delays and complaints from the Bulgarian Turks, Turkey remained patient and positive toward all signs of progress. The former dissident Zhelev, long a vocal critic of assimilation, became president and met with Turkish President Turgut Özal in September 1990. That meeting began a series of high-level economic talks in 1990-91 that yielded Turkish loans and technical assistance to Bulgaria and promised to bolster bilateral trade, which had shrunk by 80 to 90 percent in the mid1980s . A new treaty of friendship and cooperation was prepared in the summer of 1991.
Despite the thaw, obstacles remained in Bulgarian-Turkish rapprochement. The ill will caused by Zhivkov's shrill anti-Turkish propaganda remained fresh in the early 1990s. Strident anti-Muslim and anti-Turkish statements in the media by Bulgarian nationalist factions kept tension high, and minor border incidents continued in 1991. And Bulgarian friendship with Greece created a precarious balancing act that required caution toward such moves as the Bulgarian-Turkish nonagression pact proposed by Turkey in late 1990.
Data as of June 1992