Dee ihe ga-aga n'ihu na paragraf a - N'afọ 1968, mgbe oge opupu ihe ubi Prague gasịrị, ndị agha wakporo mba ahụ
ndị agha Warsaw Pact (People's Republic of Bulgaria, People's Republic of Hungary, People's Republic of Poland, na Soviet Union, ewezuga Socialist Republic of Romania na People's Socialist Republic of Albania) na 1968, na-akwụsị oge ịtọhapụ n'okpuru nduzi nke Alexander Dubček. E gburu ụmụ amaala Czechoslovak 137 ma merụọ 500 ahụ nke ukwuu n'oge a na-arụ ọrụ.