Getting deep into the weeds on the web of Shia groups in the Middle East, from swentr.site:
What resources will Tehran be able to use in response to the attack on its consulate in Syria?

© RT / RT
On Monday, the Israeli Air Force struck a building near the Iranian embassy in the Syrian capital. As a result of the attack, the consulate building was destroyed and the commanders of the Iranian Islamic Revolutionary Guard Corps (IRGC) unit, Generals Mohammad Reza Zahedi and Mohammad Hadi Haji Rahimi, were killed.
President Ebrahim Raisi has already warned that “this unfair crime won’t go unanswered.”
“Zionists must know that they will never achieve their sinister goals with such inhumane actions and, day by day, the resistance front and the disgust and hatred of free nations against their illegitimate nature are being strengthened, and this cowardly crime will also not go unanswered,” he said.
What the answer will be is still unknown. However, in recent years, Tehran has managed to become a full-fledged superpower in the region, with support in many countries in the Middle East.
Shadow of Iran
The escalation of the conflict in Gaza, which started with the Hamas-led invasion of Israel last October (“Operation Al-Aqsa Flood”) and the Israel Defense Forces’ (IDF) subsequent military operation that claimed tens of thousands of lives, gave rise to much speculation about the weakness and short-sightedness of the Israeli leadership and the exceptional military training of Israel’s opponents. And it’s not just Hamas that we’re talking about, but Iran.