While Iran and its proxies will cite the assassinations as their reason for their recent attacks, Israel had to target the men who were intentionally stalling Gaza cease-fire talks. If Iran-backed militias choose to remain on the offensive, the US and Israel — who are interested in completing a cease-fire Hamas refuses to accept — have no choice but to flex all their might to stop these terrorists from making any big moves.
The cease-fire deal that was reportedly approved by Israel was a farce from the beginning, and Netanyahu lied to the US about it. Then, likely with the help of US intelligence agencies, Israel carried out unprovoked assassinations — calculated actions by Israel, which was hoping to make it look like Iran-backed proxies were obstructing peace and readying for war. If there's an escalation here, the US and Israeli warmongers will be to blame.