On 9 April 1929 a treaty was signed in Ankara between Turkey and Iran to further delimit their border, partly in response to the Kurdish Ararat rebellion; this was then finalised at the 1932 Tehran Convention, resulting in some small exchanges of territory in the vicinity of Little Ararat, Bazhergah and Qotur.[1][19][20][21] The border was then demarcated and a final agreement signed in Tehran on 26 May 1937.[9]