SiegeSiege of NishapurNov 1220 – Apr 1221 · 36.21° N, 58.80° EOpen on the mapWikipediaOpen on the mapWhat the records sayWhenNov 1220 – Apr 1221KindSiegeCoordinates36.21° N, 58.80° EDescription1221 siege during the Mongol invasion of the Khwarazmian EmpireThe sourceWikidata: battles and siegesWikidata contributorsCreative Commons CC0 1.0 (public domain dedication)Source pagePart ofMongol invasion of Khwarazmian Empire and Eastern Iran1219 · WarNearby in time and placeMongol invasion of Khorasan1220 · Military operationSiege of MervApr 1221 · SiegeMerv revolt1222 · RebellionSiege of Herat1221 · SiegeRevolt of Husain ibn Kharmil1207 · Rebellion