Sabotaging dual-use communications devices that are used, specifically, by members of an enemy paramilitary group is not a clear-cut war crime. On the other hand, there is a very strong argument that ‘blind-firing’ such devices en-masse without regard for the proximity of civilians or possibility of civilian harm is a war crime via insufficiently discerning use of force. But even that is something that could probably be argued in a legitimately-unbiased international court - not that it’ll ever fucking get to one, considering Israel’s history with international courts.

Either way, it’s a shite move that was only meant to escalate the situation so Bibi can stay in power a few more minutes. Vile shit.