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However, the NSA's report was completely disproved by Croatian experts. The report failed to recognize that Tito was a native speaker of the very distinctive local Kajkavian dialect of Zagorje. The acute accent, present only in Croatian dialects, which Tito is perfectly pronouncing, is the strongest proof of Tito's belonging to Kajkavian dialect.

What was the distinct local dialect Tito spoke?
Zagorje