Counterpoint: I think it is pretty clear Hamas' claims were bullshit, but I downvote this fucking post for the tasteless tone and fucking snickering emoji. It's a current and ongoing human fucking tragedy, not a sports event.
Hahaha ha got em, civilians died as a predictable outcome of warfare, and hhahaha morons critical of Israel thought maybe Israel had bombed a hospital but not it's just that Gaza has no resources so even their weapons are shit. Hahaha hahaha haha war.
Yes, I know... the US knew about every gallon of mustard gas and sarin Saddam had - not only did the US provide intelligence to Saddam to specifically help his use of the stuff during the Iran-Iraq War be more effective, they could also literally read almost every damn ciphered communique of the Iraqi army at the highest levels thanks to the fact that Iraq used compromised ciphering machines bought from the CIA front company Crypto AG in Switzerland.
They knew perfectly well Saddam had destroyed all his stockpiles - if he hadn't, Bush would have never dared to invade Iraq.