(1) Israel does not have the aerial practical capability/capacity to drop GBU-28/37 MOPs (2300Kg/5000Kg), nor prototype, not yet certified in US Service, GBU-57A/Bs MOPs(14,000Kg) in practice re(2), especially in timed sequenced precision drops, total 85,000Kg.
(2) It is known that a timed precise sequence of ~16-18 alternating probable GBU-10(MK84 PavewayII blast effect(972Kg)) bombs, & at least GBU-37 MOPs, though quite likely, prototype GBU-57A/Bs, ~85,000Kg worth, were used to assassinate Nasrallah & Hezbollah leadership in Sth Beirut suburbs (Haddiyeh(?). Followed by a duplicate further decapitation strike days later re Hezbollah.
(3) This requires strategic bombers which Israel does NOT posses. US does, both the bombers & unique ordnance & capability, as demonstrated re Yemen/Ansar Allah. Open Source B2 spec is lowball 18,144Kg up to 22680Kg, therefore 4, at most 5 B2, in a flight, required to execute the ops, plus, necessity of, stealth CAP escorts.
(4) Therefore the Hezbollah decapitation strikes in Beirut, and mass non-combatant resultant causalities were a direct consequence of US direct belligerence alongside/in support of Israel.
They also used the same B2s in Yemen afterwards to attack underground targets. These bombs certainly have depleted Uranium or nuclear material of some sorts. They were able to penetrate more than 30 meters underground. After the attack the ground kept making weird exploding sounds a day after. The chemists association in Lebanon issued a warning that depleted Uranium was used.
Americans have been involved far, far more intensively than most imagine. The genocides in Gaza and Lebanon are mostly American. All the weapons are American. The planning and coordination is American and there are many American troops and special ops on the ground both in Gaza and Lebanon.