It swallowed Goa, Sikkim, Hyderabad against their will.
It sponsored LTTE and sponsoring Madheshis now. But both Srilanka and Nepal proved hard nut to crack so far.
And in Bangladesh it sponsored Jummo insurgency.
Did it take BD side in 71 because of call from ethnic Bengali people by similar Nazi tactic? Destabilized it first by pushing millions of Biharis into our territory. And planned to take over it later. But Bengalis didnt decide join it. SM quickly sent back Indian forces home.
I suspect it may someday start sponsoring Jamatis. We have no peace with such neighbor.
One thing to note it has 100s insurgency groups running wild in its own territory. They should sponsor them instead or outsiders should do the same. After all they are minorities too.