Pan-Slavic Inc., where a "j" is pretty much just like an English "j" but more rare. Occasionally (and it may be more of a local accent thing than the languages) I'll hear straight "j"s pronounced a little like a "dj" ("James" would turn into "Djims"), but "dj" is properly a different letter, I recall. Looks like a funky fate rune in the S Slav alphabet.
AFAIK, true for Russian and the South Slavics. West Slavics might be different.
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