Alexander Ypsilantis is declared leader of Filiki Eteria, a secret organization to overthrow Ottoman rule over Greece.[citation needed]

Alexandros Ypsilantis was a Greek nationalist politician who was member of a prominent Phanariot Greek family, a prince of the Danubian Principalities, a senior officer of the Imperial Russian cavalry during the Napoleonic Wars, and a leader of the Filiki Etaireia, a secret organization that coordinated the beginning of the Greek War of Independence against the Ottoman Empire.

Filiki Eteria or Society of Friends was a secret political and revolutionary organization founded in 1814 in Odessa, whose purpose was to overthrow Ottoman rule in Greece and establish an independent Greek State. Society members were mainly young Phanariot Greeks from Constantinople and the Russian Empire, local political and military leaders from the Greek mainland and islands, as well as several Orthodox Christian leaders from other nations that were under Hellenic influence, such as Karađorđe from Serbia, and Tudor Vladimirescu from Romania. One of its leaders was the prominent Phanariote Prince Alexander Ypsilantis. The Society initiated the Greek War of Independence in the spring of 1821.

The Ottoman Empire, also called the Turkish Empire, was an imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Central Europe, between the early 16th and early 18th centuries.