- 10 March 1923, Vatslav Vorovsky, the Soviet delegate to the Conference of Lausanne, was assassinated in the restaurant of the Cecil Hotel. Two of his associates were both wounded when they resisted. The assassin, a Swiss officer named Maurice Conradi, handed the gun to a waiter, asked him to call the police and waited until authorities arrived to arrest him. Vorovsky was 51 years old.
- The May 20 funeral for Ambassador Vorovsky, hailed as a hero by the Soviet Union, came with an estimated 250,000 residents of Moscow lining the streets to watch the funeral procession.