Route 1 neither border follows ethnic geography → both cut across it → 3,700 km Bangladesh line + Myanmar frontier along four NE states → belonging before numbers

Route 2 two porous frontiers splitting kin communities → movement read as an identity question first, a numbers question second

Bangladesh side = settlement → poverty / floods / 1971 → 30–40 million → Tripura’s demography → shared language hides the migrant → contest over land, jobs, cultural dominance → AASU → Assam Accord 1985 → NRC → Myanmar side = insurgency + refuge → NSCN-K through the same porousness → Feb 2021 coup → refugees into Mizoram → Rohingyas as the joint between the two borders → statelessness 1974 / 1982 → treated as Bangladeshi immigrants → UN “ethnic cleansing”

hardening the line has a real case → fencing + scrapped FMR → trafficking, forged voter cards, ISI support → but the ethnic conflict predates the migration → Ross Mallick, colonial state with new rulers → 220 ethnic groups in one administrative frame → separatism mobilised

Route 1 Ghoshal → dormancy or militancy turns on state capacity to accommodate → fencing buys time, accommodation buys settlement

Route 2 flow follows growth asymmetry → control alone cannot hold the line → work permits + development + Gujral Doctrine on root causes