Ottoman Interregnum (1402–1413)
The Ottoman Interregnum (1402–1413) was triggered by one of the most dramatic battlefield reversals of the medieval world. On 20 July 1402 at the Battle of Ankara, the Mongol-Timurid conqueror Timur (Tamerlane) defeated the Ottoman sultan Bayezid I and took him prisoner — the first time a reigning Ottoman sultan had been captured. Bayezid died in captivity in 1403. Timur's victory shattered the Ottoman state. He restored the Anatolian Turkish beyliks (principalities) the Ottomans had conquered, returned captive Byzantine territories, and effectively dismembered the sultanate. When he withdrew eastward, the empire was left without a sultan and with four princes — Süleyman, İsa, Musa, and Mehmed — each controlling a portion of the remaining territory and each claiming legitimacy. The Interregnum was an eleven-year civil war fought across the full breadth of Ottoman territory, from Rumelia (the Balkans) to Anatolia. Süleyman held Edirne and the European territories; Musa and İsa contested Anatolia; Mehmed — the youngest, based in Amasya in eastern Anatolia — proved the most tenacious. Mehmed defeated İsa first (c.1403), then allied with Musa against Süleyman (who was killed in 1411), then turned on Musa, defeating and killing him in 1413 near Sofia. Mehmed I entered Edirne as the undisputed sultan in July 1413 and spent the remaining eight years of his reign (he died in 1421) consolidating a reunified empire. His successors drew the lesson that succession crises were existential threats: the Ottoman practice of fratricide (newly enthroned sultans killing their brothers to prevent civil war) became institutionalised precisely because the Interregnum demonstrated what happened without it. For Byzantium and the Balkan Christian states, the Interregnum was a providential reprieve — Bayezid had been besieging Constantinople when Timur struck. The Byzantines leveraged it to play the competing princes against each other, extracting concessions from each. But the respite was temporary: within two generations, under Mehmed II (Mehmed the Conqueror), Constantinople fell.
- Year: 1402 CE
- Category: Political
