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| 1921, Aug. 7 |
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| Agreement with France with respect to the free zones. Switzerland gave up former treaty rights, but this arrangement was repudiated by a Swiss plebiscite (Feb. 18, 1923). Thereupon the French government took unilateral action, moving its customs stations forward to the political frontier (Nov. 10, 1923). The Swiss government protested, and it was finally decided to investigate the legal aspects of the problem and to arbitrate the dispute (Oct. 30, 1924, March 18, 1925). | 1 |
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| 1923, March 29 |
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| Conclusion of a customs union between Switzerland and the little principality of Liechtenstein, which before the war had been closely associated with Austria-Hungary. | 2 |
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| May 10 |
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| Vaslav Vorovsky, Russian delegate to the Lausanne conference, was assassinated by Maurice Conradi, a Swiss who had suffered under the Soviet regime in Russia. Conradi was acquitted by the courts (Nov. 16), and the incident brought Switzerland and Russia to a state of extreme tension. | 3 |
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