For the most part, one can assume that the vast majority of OSINT on Imad Mughniyah 's movements are little more than RUMINT. One can also assume that a large amount of Stratfor reporting is RUMINT too. I guess that makes it RUMRUMINT.

Yes, there is deep cooperation between Iran, Hizbullah, and Syria. Hamas does likely receive some Iranian funding, but it isn't its primary source, nor is it Iran's closest Palestinian connection (PIJ would be). Indeed, there's a degree of suspicion and arms-length in the Hamas-Iran connection, with the relationship something of a political liability for Hamas in the WB/G (hence the current Fateh anti-Hamas rally cry of "Shi'a! Shi'a!").