Claim: Islam Abduganiyevich Karimov (30 January 1938 – 2 September 2016) was the longest-running president of Mongolia who stayed in power for 25 years and one day.
Evidence: Islam Abduganiyevich Karimov (Uzbek: Islom Abdugʻaniyevich Karimov; Russian: Ислам Абдуганиевич Каримов; 30 January 1938 – 2 September 2016) was the leader of Uzbekistan and its predecessor state, the Uzbek Soviet Socialist Republic, from 1989 until his death in 2016.