> Where do you think they've got the weapons from?
Ultimately, from the United States taxpayer. Who supply the Egyptian military government, who turn a small proportion over to the Islamists to keep them from too much rabble-rousing. Who smuggle them to Hamas.
Both Qatar and Iran supply money and other forms of support to Hamas. But no RPG makes it into Gaza (across a shorter than 10 mile border) without the Egyptian military sort of knowing about it.