The use of "secret agreements and undertakings between several allies or between one state and another" continued throughout World War I; some of them were irreconcilably inconsistent, "leaving a bitter legacy of dispute" at the end of the war.[6] Some important secret treaties of this era include the secretly concluded treaty of Ottoman–German alliance, concluded at Constantinople on August 2, 1914.[7][8] That treaty provided that Germany and Turkey would remain neutral in the conflict between Austria-Hungary and Serbia, but if Russia intervened "with active military measures" the two countries would become military allies.[7][8] Another important secret treaty was the Treaty of London, concluded on April 26, 1915, in which Italy was promised certain territorial concessions in exchange for joining the war on the Triple Entente (Allied) side.[9] Another secret treaty was the Treaty of Bucharest, concluded between Romania and the Triple Entente powers (Britain, France, Italy, and Russia) on August 17, 1916; under this treaty, Romania pledged to attack Austria-Hungary and not to seek a separate peace in exchange for certain territorial gains.[10] Article 16 of that treaty provided that "The present arrangement shall be held secret."[11]