Nāder Shāh Afshār (1688-1747) was a member of the Turkic Afshar tribe of northern Persia supplying the military power to the Safavid state. Nader rose to power during a period of anarchy in Iran after a rebellion overthrown the weak Persian Shah Sultan Husayn and both the Ottomans and the Russians had seized Persian territory for themselves. Nader reunited the Persian realm and removed the invaders. His numerous campaigns created a great empire that briefly encompassed what is now part of Iran, Armenia, Azerbaijan, Georgia, the North Caucasus, Iraq, Turkey, Turkmenistan, Afghanistan, Tajikistan, Uzbekistan, Pakistan, North India, Oman and the Persian Gulf. In his campagins, he imitated the military prowess of Mongols and their cruelty. His victories briefly made him West Asia's most powerful sovereign though his empire quickly disintegrated after he was assassinated in 1747. Nadir was Persia's most gifted military genius known as "The Napoleon of Persia". He raised his country from the lowest depths of degradation to the proud position of the foremost military power in Asia. Unfortunately, his triumphs were at the expense of incalculable suffering and terrible loss of life. His grandiosity, his insatiable desire for more conquests and his egocentric behaviour suggest a narcissistic personality disorder and in his last years he seems to have developed some paranoid tendencies.