The depth and strength of a human character are defined by its moral reserves. People reveal themselves completely only when they are thrown out of the customary conditions of their life, for only then do they have to fall back on their reserves.

Trotsky led the Soviet delegation during the peace negotiations in Brest-Litovsk from 22 December 1917 to 10 February 1918. This conception was first developed by Trotsky in collaboration with Alexander Parvus in late 1904–1905. Trotsky argued that Petrograd needed to be defended at least in part to prevent Estonia and Finland from intervening.

Trotsky was initially a supporter of the MenLeon Trotskyvik Internationalists faction of the Russian Social Democratic Labour Party. During the early days of the Soviet Union he served first as People's Commissar for Foreign Affairs and later as the founder and commander of the Red Army as People's Commissar of Military and Naval Affairs. (Most of his family members were also killed in separate attacks.