You may get a lot of really terse and crazy replies with this question, because it is complicated. Very, very complicated.

Palestine is recognized by some countries, and not by others, and there is a lot of deep and angry politics over this.

Historically, the area that has been called Palestine does include parts of present day Jordan.

Currently, there is more an area inside the current country of Israel which can be called Palestine, and those people want to be an officially recognized country, for the most part.

This submission has been removed because it involves current events. To keep from discussion of politics, we have a 20-year rule here. You may want to try /r/ask_politics or another current-events focused sub.