Who Killed Imad Mughniyeh?

A quick list of possibilities:
1. The Mossad
Motive: Revenge; to stop him from carrying out any more attacks.

2. The CIA
Motive: Revenge; to stop him from carrying out any more attacks.

3. A rival Hizbollah member
Motive: To move up on the Hizbollah political ladder.

Stay tuned for more.