[olliej]

It’s not - Israel’s army is among the small set of armies that continues to use illegal munitions (I recall they were using cluster bombs a few years ago).

I am unclear why they feel it necessary, but that’s how their army operates (not helped by their current nationalist PM) :-/

[mrguyorama]

Aren't frangible and hollow-point bullets banned by international treaties, but legal for American police forces to use?

[slededit]

The geneva convention only covers militaries not police forces. Regardless "international law" is a bit of a misnomer. It exists only at the tolerance of sovereigns who can and do ignore it whenever it suits them.