In the US there are 501 (c)(3) organizations which have some involvement in Gaza but I haven’t been able to find any directly Gaza related funds. Most such funds that had existed were forced to close during the previous US administration.
Ukraine’s claim that Russia should be giving it gas at better than half the price being charged to Europe because their economy is weak has a ring of old outmoded unreality. The West may have been able to finance and advise the Orange Revolution but clearly the Ukraine has some way to go before it accepts market economics.
Another pointless confrontation with Russia and isn’t clear that anybody benefits other than the Ukraine in potentially winning continued concessions and maybe that is worth fighting for but not worth furthering diplomatic tensions for.