Nader Shah Afshar (Persian: نادر شاه افشار; also known as Nader Qoli Beyg نادر قلی بیگ or Tahmāsp Qoli Khan تهماسب قلی خان) (August 1688 – 19 June 1747) was the founder of the Afsharid dynasty of Iran and one of the most powerful rulers in Iranian history, ruling as shah of Iran (Persia) from 1736 to 1747, when he was assassinated during a rebellion. He fought numerous campaigns throughout the Middle East, the Caucasus, Central and South Asia, such as the battles of Herat, Mihmandust, Murche-Khort, Agh-Darband, Yeghevard, Khyber Pass, Karnal and Kars. Because of his military genius, some historians have described him as the Napoleon of Persia, the Sword of Persia, or the Second Alexander. Nader belonged to the Turkoman Afshar tribe, a semi-nomadic tribe settled in Khorasan in northeastern Iran, which had supplied military power to the Safavid dynasty since the time of Shah Ismail I.Nader rose to power during a period of chaos in Iran after a rebellion by the Hotaki Pashtuns had overthrown the weak Shah Sultan Husayn, while the arch-enemy of the Safavids, the Ottomans, as well as the Russians had seized Iranian territory for themselves. Nader reunited the Iranian realm and removed the invaders. He became so powerful that he decided to depose the last members of the Safavid dynasty, which had ruled Iran for over 200 years, and become Shah himself in 1736. His numerous campaigns created a great empire that, at its maximum extent, briefly encompassed what is now part of or includes Iran, Armenia, Azerbaijan, Georgia, the North Caucasus, Iraq, Turkey, Turkmenistan, Afghanistan, Uzbekistan, Bahrain, Pakistan, Oman and the Persian Gulf, but his military spending had a ruinous effect on the Iranian economy.Nader idolized Genghis Khan and Timur, the previous conquerors from Central Asia. He imitated their military prowess and—especially later in his reign—their cruelty. His victories during his campaigns briefly made him West Asia's most powerful sovereign, ruling over what was arguably the most powerful empire in the world, but his empire and the dynasty he founded quickly disintegrated after he was assassinated in 1747. The turning point in his military career started from his second and third campaigns against the by then revolting Lezgians, as well as other ethnic groups of Dagestan in the northwestern parts of his domain. Nader Shah has been described as "the last great Asiatic military conqueror".