One might easily say the same about Israel. It too is a contrived country, again a British concoctionIt remains to be seen whether the Jews will defend Israel, or not.
But their nationhood is not in doubt. An Israeli Jew is not at all like an "Iraqi" or a "Pakistani".
If Syria took over the Sunni triangle tomorrow, by Wednesday the "Iraqis" would be Syrians. If Syria took over Israel tomorrow, in a thousand years the surviving Jews, if any, would still be the people of Israel.
Pakistan and Israel are completely analogous. Both were set up along line of religious make-up. Both were set up through Machieavellian expediency rather than through altruism or religious sympathies.
Actually now I come to think of it Jewish 'terrorists', David Ben Gurion and Menachem Begin blowing up British hotels were pretty instrumental in the process too. Both men later became Israeli PMs, go figure!