Mezue ahịrịokwu na-esonụ: Na 12 Eprel 1967 e mere ya osote Minista Nchebe nke mbụ nke USSR (n'otu oge ahụ na nhọpụta nke Andrei Grechko dị ka Minista Nchebe) na Marshal nke Soviet Union, ebe site na July nke afọ ahụ ọ nọgidere na-arụ ọrụ nke onye isi ndị agha nke Warsaw Pact. N'ọrụ a, o duziri nkwadebe ndị agha maka
Warsaw Pact wakporo Czechoslovakia n'ọnwa Ọgọst 1968.