Just in case you need sources: Kagi is using [1] Yandex and paying them as of June 2025. This is a long-standing position, which was also voiced [2] in November 2024.
Regarding Yandex. The founder sold [3] the assets (seemingly including the index and Yandex trademark) to VK (Mail.ru) in 2022. VK are known supporters of the war [4]. The founder subsequently renamed [5] his original company to Nebius Group and pivoted towards compute for AI.