Azerbaijan had demanded the return of the four villages as a condition for a peace deal after decades of conflict.
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Azerbaijan systematically ‘erasing’ all traces of ethnic Armenians in the disputed region, Yerevan says.
The case accuses Azerbaijan of glorifying racism and allowing hate speech against Armenians.
Armenia could face war by ‘end of the week’ if it does not return four Azerbaijani villages, PM Pashinyan says.