From your link:
"However, despite the public opposition of Pakistani officials, multiple former Prime Ministers gave covert permission to the United States to carry out these attacks."
Makes sense, they were in the tribal areas where I assume the government was losing control of their monsters.
But I dont think we are invading
Obama attacked Pakistan, Somalia and Yemen. We aren’t there now are we?
December 1, 2012 - 300th drone strike on Pakistan.
Obama executed 563 drone strikes on Yemen, Somalia and Pakistan alone while in office.