Do you think external forces are required to divide a nation like pakistan? Pakistan will get divided no external involvement required.
This is how the nations fall: 1) When muslims are minority in any country - their ideology is to fight for seperate nation with the sole goal of imposing islamic laws - example: India, Thailand, UK etc 2) When the muslims are in Majority then their goal is to diminish non-muslims - strategies - marry all the non-muslim females, kill and tortures - examples - bangladesh, Iraq, Pakistan etc 3) When Muslims are majority and only a few non-muslims are left then fight and kill eachother - example: Pakistan, Iraq, Iran, Afghanistan.
Future sad news for us - Pakistan's end is approaching.