During 1904, he was based in Odesa, Ukraine, but emigrated again in August 1904,[3] to help launch the first exclusively Bolshevik publication, Vperyod (Forward), of which he was an editor.

[4] In 1917, after the February Revolution in Russia, Vorovsky was appointed to three-man Bolshevik Stockholm Bureau, along with Karl Radek and Yakov Hanecki.

[5] Following the victory of the Bolshevik Revolution in November 1917, Vorovsky was named the Soviet government's diplomatic representative to Scandinavia, remaining based in Stockholm.

[6] In December 1918, Sweden, responding to pressure on the part of the Allied powers who were intent upon imposing an unbreakable blockade, withdrew official recognition of Vorovsky as the representative of Soviet Russia.

[1] Accompanied by two diplomatic attachés, Vorovsky arrived in Lausanne from Rome on April 27, hoping to force the conference's official participants to recognize Soviet interests in the Turkish Black Sea Straits.

[12] On May 9, Vorovsky dispatched his final report to Moscow, noting that three days earlier a group of right wing youths had appeared at his hotel and sought a meeting.

Vorovsky wrote: "I refused to receive them, and Comrade Ahrens, who went out to them to find out what it was all about, disposed of them at once, telling them that they should put such matters before their Government.

The behaviour of the Swiss Government is a shameful violation of the guarantees given at the beginning of the conference, and any attack on us in this particularly well-organised country is only possible with the knowledge and permission of the authorities.

The unknown figure, a Russian White émigré named Maurice Conradi, pulled a gun and shot Vorovsky to death, wounding his two companions, Ahrens and Divilkovsky, in the attack.

In Moscow, on 11 May 1924, in the courtyard of a former apartment building of the First Russian Insurance Company, a bronze monument of Vorovsky was erected under the project of sculptor Mikhail Kats.

In connection with the installation of the monument and the demolition of the Vvedenskaya church located at the corner of Kuznetsky Most and Bolshaya Lubyanka, the vacated place was named Vorovsky Square.

[15] In 1990, the Russian Coast Guard launched a Menzhinskiy-class (project 11351 - NATO Krivak III Class) ship named for Vorovskiy (Воровский 160).