The large military and economic powers in the world have not placed any sanctions on Israel, but they have placed all kinds of sanctions on Iran, Iraq (including invading and occupying that country), Libya, and Syria (and Hamas), while at least some of them have provided Israel with enormous amounts of assistance. And the US has been using its veto in the UN to block all help for the Palestinians.

It doesn't matter what Hamas' charter says, and what the government of Israel doesn't say. It's not necessary for the government of Israel to publish its intentions for all the world to see in order for it to carry out its agenda of removing all Palestinians from Palestine. What they do is what matters, and Israel has been committing genocide and ethnic cleansing of the Palestinians (including actually driving them into the sea) for decades, while Hamas hasn't got the ability to do anything of the sort.

There is no reason whatever for the countries of the West to not hold both sides to the exact same standards, and not doing so is a product of White supremacist colonialist attitudes on the part of the rich and powerful countries of the West.