I have done lot of research on this. People get confused and cant differentiate between Bani Israel and Jews. Jews are followers of a religion, its not a race, however Bani Israel is the race. Just like Arab is a race and you can have a Muslim or Christian within Arabs. From Yaqoob (AS) (Jacob) came 12 sons. We all know Yusuf (AS) (Joseph) and his brothers story. 12 sons = 12 tribes. And thats where the Bani Israel came from. Jews as we see today, and this is the very important point, are only from two tribes of Bani Israel . The rest, the ten tribes were NOT Jewish or got anything to do with the Jews. Pakhtoons are the Bani Israel as mentioned in Quran. They are the ones who comprised of the ten tribes and they are ones who carved the northern kingdom Israel and called themselves Isrealites while the southern kingdom, the Kingdom of Judah comprised of the rest of the tribes, and here in Judah, the Jews came from. The two were sworn enemies and fought for nearly a century until both were destroyed by outside forces and taken captive. In the case of Pakhtoon (the Israelities) by Assyrians who later moved them to Indus plains. and the Jews by the Babylonians. So when Pakhtoon find it repugnant to be classed as Jews, there is a history to it being sworn enemies of Judah even in ancient times. Pakhtoon have keep their bloodline from Jacob intact, we all know Pakthoon culture, while Jews unfortunately have lost their Bani Israel gene. Infact most Jews today are from Khazar lineage. And that is where the confusion arise about the gene and "scientific" proof of Pakhtoons being bani Isreal as people are compare them to "Khazar" gene which is not Bani Israel to being with. One more thing, the Pakhtoon revered this person called Qais Abdur Rasheed. According to them, he was the first among them to accept Islam and did bait on Prophet (PBUH) hands. He is the one who later turned all of them to Islam. And guess what, Qais was the 35th descendant of Talut (mentioned in Quran in reference to David and Goliath) also known in western world as King Saul.
For me the most astonishing thing is, that the ancient Hebrew, according to the research done by Aristotle, were a tribe of Indus, who were displaced by the "Noah Deluge". Quran also mentioned that ancestors of Bani Isreal were with Noah. Which resolved the puzzle about those ancient Indus cities/settlements buried ten feet under sand all over Pakistan and surrounding areas. So yeah, we Pakistanis are basically the original nation of Noah. And as for Pakhtoons, they just came back to the lands from where their ancient ancestors took the Journey towards holy lands.