Mezue nkebi ahịrịokwu a: Johnson nwere nchegbu banyere izere ohere nke agha nuklia, ọ chọkwara ibelata esemokwu dị na Europe. Gọọmentị Johnson gbasoro nkwekọrịta njikwa ngwa agha na Soviet Union, na-abịanye aka na nkwekọrịta nke mbara igwe na nkwekọrịta na mgbasa nke Ngwá Agha Nuklia, ma tọọ ntọala maka mkparịta ụka mkparịta ụka nke Strategic Arms. Onyeisi ala Johnson nwere nzukọ dị n'udo n'ụzọ ka ukwuu ya na Onyeisi ala Soviet bụ́ Alexei Kosygin nwere ná Nzukọ Glassboro Summit Conference na 1967; mgbe ahụ, na July 1968, United States, Britain, na Soviet Union bịanyere aka n'Agbụgba Ndụ Maka Mgbasawanye Ngwá Agha Nuklia, bụ́ nke onye ọ bụla bịanyere aka na ya kwekọrịtara ịghara inyere mba ndị ọzọ aka ịzụlite ma ọ bụ inweta ngwá agha nuklia. A kwụsịrị nzukọ e mere atụmatụ inwe n'etiti United States na Soviet Union banyere ikpochapụ ngwá agha nuklia mgbe ndị agha Soviet
n'ụzọ ime ihe ike na-ebelata Prague Spring, a nwara democratization nke Czechoslovakia.