Sabzevar expedition

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Sabzevar expedition
Part of Nader's Campaigns
An artist's impression of a gunpowder depot in northern Persia (eighteenth century).
Date 1727–1728 Location Northern Persia Result Nader's Victory Tahmasp II of the Safavid dynasty becomes Nader's vassal Territorial changes Nader solidifies his hold on Khorasan and brings the south-eastern Caspian region under his dominion
Belligerents
Nader's Forces	Safavid dynasty
Commanders and leaders
Nader	Tahmasp II
Strength
Unknown	Unknown
Casualties and losses
Minimal	Minimal

The Sabzevar expedition was a politically decisive event in Nader's career where he in effect turned from mere commander-in-chief of Tahmasp's forces into the real power behind the throne (although technically this still was a government in exile as the Gilzai Afghans were in control of Isfahan). The expedition was launched mainly due to Tahmasp's own incompetence and ill-thought attempt at curbing the powers of his upstart general and military genius.