Ukraine perhaps, but israel, nah! They have the best weapons the US can give them, they have a very large army indoctrinated to hate Palestinans, they have air power, sea power, land power. They defeated several large armies in the past.
Hamas has rifles, RPGs and a few rockets that mostly get destroyed in the air- they haven't even been using IEDs.
Anyone thinks Hamas threatens the existence of israel is .................!