So who targeted the Iranian Embassy in Lebanon?

[MADem]

1. Hard to know from the information provided.

It would help to know what kind of device was used to light that thing off--was it a stick-and-run motorcycle-delivered device, or wired into the vehicle?

There was the "Tsarnaev double-tap" (it's not theirs but we're most familiar with their use of the tactic) with a second explosion to get more people running away from the first one--that's an 'insurgent' methodology.

Iran is not short of people who have been taking issue with them, particularly in the Sunni world. We're in a phase of real sect-intolerant behavior when it comes to Muslims in the Middle East. So, it might be coming from fairly close to home, timed so that there are lots of folks that might be blamed. It might not be accurate for speculators to be too quick to pin the effort on a larger actor on the world stage, trying to push Iran this way or that.