The Kars treaty also impacted Turkish-Iranian relations. The annexation of Surmali and the Aras corridor now gave Turkey a slightly more extensive border with Iran. In the late 1920s, the Ararat rebellion erupted in the vicinity of Mount Ararat. As Turkey attempted to quash the rebellion, the Kurdish rebels fled across the Iranian border to the eastern flank of Lesser Ararat, which they used as a haven against the state in their uprising. In response, Turkey crossed the border with Iran and occupied the region. The Lesser Ararat area became the subject of discussion between Turkish and Iranian diplomats in border delineation talks. In Tehran in 1932, Iran agreed to cede the area to Turkey in exchange for some territories further south.