The TREATY OF BUCHAREST (1886) established that from then on the Governor of Eastern Rumelia should be the Prince of Bulgaria; however the union of the two territories was still postponed, Ottoman sovereignty over Rumelia unquestioned.
Russia had opposed Prince Alexander; yet it did not recognize Prince Ferdinand; a Russian adventurer, NABOKOV, in the hope of raising a rebellion against the new dynast, made two incursions into Bulgaria in 1887; in the second he was killed.