Greater Bangladesh (Bengali: বৃহত্তর বাংলাদেশ, romanized: Brihôttôr Bangladesh; among other names, see below) is a conspiracy theory circulated by a number of far-right Indian politicians and writers that the People's Republic of Bangladesh has aspirations of territorial expansion, to include the Indian states of West Bengal, Tripura and Assam as part of its own territory. The theory is principally based on a widespread belief amongst Indian masses that a large number of illegal Bangladeshi immigrants reside in Indian territory.