In 2010, he was in charge of the Independent International Commission of Inquiry into the Events in southern Kyrgyzstan, established after the President of the Kyrgyz Republic Roza Otunbayeva asked him, as Special Representative for Central Asia of the OSCE Parliamentary Assembly, to coordinate the process to establish it.
The KIC was mandated to investigate the facts and circumstances relevant to incidents that took place in southern Kyrgyzstan in June 2010, qualify the violations and crimes under international law, determine responsibilities and make recommendations, particularly on accountability measures, so as to ensure the non-repetition of the violations and to contribute toward peace, stability and reconciliation.
In addition to his role in parliament, Kiljunen has been chairing the Finnish delegation to the Parliamentary Assembly of the Council of Europe since 2019.
[7] In November 2024, while serving as a chairperson of the Foreign Affairs Committee, a video emerged showing Kiljunen speaking to members of a pro-Russian association inside the Finnish Parliament House.
He also called the legislation restricting real estate transactions by Russians racist, and stated that the Finnish tabloid media coverage of Russia is a form of heavy hybrid influence.