Treaty of Paris 1856

The Treaty of Paris was signed on 30 March 1856 at the Congress of Paris, ending the Crimean War (1853–1856) between Russia and a coalition of the Ottoman Empire, France, Britain, and Sardinia. The signatories also included Austria and Prussia, who had not been belligerents but participated in the settlement.

Key provisions included:

• Neutralisation of the Black Sea: Russia and the Ottoman Empire were barred from maintaining warships or naval arsenals on its shores. This was the treaty's most humiliating clause for Russia and the one it most wanted to overturn.
• Russian territorial concessions: Russia ceded southern Bessarabia to Moldavia, losing access to the mouth of the Danube.
• Danube navigation: Free commercial navigation on the Danube was guaranteed, and a European Commission of the Danube was created to oversee it — an early example of an international river regime.
• Ottoman integration: Article VII admitted the Sublime Porte to "participate in the advantages of the Public Law and System (Concert) of Europe," nominally extending European public law to a non-Christian state.
• Moldavia and Wallachia: The Danubian Principalities received guaranteed autonomy under Ottoman suzerainty with collective European guarantee, paving the way for the union that produced Romania in 1859.
• Straits regime: The 1841 London Straits Convention was reaffirmed, keeping the Bosphorus and Dardanelles closed to foreign warships in peacetime.

The accompanying Paris Declaration Respecting Maritime Law (16 April 1856) abolished privateering and codified rules on blockades and neutral shipping — a foundational text of modern law of naval warfare.

The Black Sea clauses collapsed in 1870 when Russia unilaterally repudiated them during the Franco-Prussian War, a move confirmed at the London Conference of 1871. The broader settlement nonetheless shaped European diplomacy until the Russo-Turkish War of 1877–78 and the Congress of Berlin reopened the Eastern Question.