Rubuta ci gaba don wannan sakin layi - Johnson ya damu da kauce wa yiwuwar yakin nukiliya, kuma ya nemi rage tashin hankali a Turai. Gwamnatin Johnson ta bi yarjejeniyar kula da makamai tare da Tarayyar Soviet, ta sanya hannu kan Yarjejeniyar Sararin Samaniya da Yarjejeniyar Rashin Yada Makaman Nukiliya, kuma ta aza harsashin tattaunawar iyakance makamai. Shugaba Johnson ya gudanar da babban taron abokantaka tare da Firayim Ministan Soviet Alexei Kosygin a taron Glassboro Summit Conference a 1967; sa'an nan, a watan Yulin 1968, Amurka, Birtaniya, da Tarayyar Soviet sun rattaba hannu kan Yarjejeniyar Rashin Yadawa, wanda kowane mai sa hannu ya amince ba zai taimaka wa wasu ƙasashe su ci gaba ko samun makaman nukiliya ba. An soke taron kolin da aka shirya tsakanin Amurka da Tarayyar Soviet na rage makaman nukiliya bayan dakarun Soviet sun murkushe shi da karfi
da Prague Spring, wani yunkurin dimokuradiyya na Czechoslovakia.