Language learning app Duolingo Inc said on Tuesday over 1.3 million people took up Ukrainian as a language to learn after the Russian invasion of Ukraine in February in a show of solidarity.
The report said people studying Ukrainian in Germany and Poland rose over 1,600% compared to last year.
Russia's invasion of Ukraine plunged Europe into its biggest land war since World War Two, igniting a conflict that has killed thousands, destroyed Ukrainian cities and damaged the global economy.