"Prior to the 67 war, Gaza borders were as agreed in 49.
Those are the current boundaries of Gaza and no-one in the world is challenging them except for some Mudcat members."

People aren't challenging "the borders of Gaza", they are challenging the borders of Palestine.

This includes the west bank.

This includes the challenge to Israeli settlements.

And in contrast to "some mudcat members" challenging this, in fact the international community has challlenged this explicitly in the form of UN resolutions.

So perhaps it would be more accurate to say "some mudcat members, and about 180 countries worldwide".