After Poland, Latvia is also closing the airspace over its border with Russia and Belarus. It will already be closed this evening.
https://lsm.lv/raksts/zinas/latvija/11.09.2025-latvija-sledz-gaisa-telpu-austrumu-pierobeza-vismaz-lidz-18-septembrim.a613963/
https://x.com/wartranslated/status/1966069581916652007