I Think The most dangerous Threat to Pakistan is " Zionist state of Israel " as it is the headquarter of the propaganda being done against Pakistan.
2nd most dangerous threat to Pakistan is Its own Political system & its foreign policy which needs immediate Change.
Believe me, Pakistan is really not that important in the scheme of things. "Zionist state of Israel" has other things to attend do before thinking of secretive evil ways to wreak havoc on a country thousand miles away. But as they say, you can never be a good conspiracy theorist if you give importance to these minor details