The location of the temple is disputed among the most enthusiastic of Zionists.
I would suggest that you research this, as I too was given this impression. However after sifting through a multitude of israeli, zionist, as well as Modern West, Orthodox Christianity and that of Muslims, it became abundantly clear that while the Hebrew Jews (the ones without any say) dispute rebuilding the Temple Mount (not it's location), whereas the zionists, the ones in power and authority (for the last 100 years plus) proclaim this site and have vowed to rebuild the Temple Mount.
Jerusalem was under the rule of the Byzantine Empire, laid waste to site, because of their utter disdain for the Jews, for what they had done when the True Messiah (Jesus) Isa Alaihi Salam came. Signifying that this location was the site of the Old Temple, where the ruins remained. This is confirmed by records of the Muslims, where in 637 AD the Khulafa-e-Rashidun period under the Khalafah of Hazrat Umar RadiAllah ta'aalah Anho, the Muslim Army laid siege on Jerusalem. Since the Byzantine Empire failed to send reinforcements and support to defend Jerusalem. The appointed representative of the Byzantine Empire in the Holy Land was known as Sophronius the Sophist, titled as the Patriarch of Jerusalem, who (his excellency) conceded the surrender of Jerusalem to the Muslims, under the condition that the Caliph of the Islamic World personally come to Jerusalem to take accept the surrender.
The incident has been recorded, that Hazrat Umar RadiAllah ta'aalah Anho was given a tour of the City of Jerusalem, by the Patriarch of Jerusalem. Whilst the tour was conducted, they came across the ruins of the Temple Mount. It is recorded that Hazrat Umar RadiAllah ta'aalah Anho witnessed the site of the Temple Mount filled with garbage. The reason was the Orthodox Christians displayed their disdain for the Jews and what their ancestors did to the One True Messiah of God, Jesus Alaihi Salam, by dumping their garbage in the ruins of the Temple Mount. Hazrat Umar RadiAllah ta'aalah Anho, personally began to clean the site, which was followed by the rest of the Muslims doing so with him. The site was cleared and Hazrat Umar RadiAllah ta'aalah Anho commissioned the building of Masjid Al-Aqsa in place of the ruins of the Temple Mount.
Why did Hazrat Umar RadiAllah ta'aalah Anho commission the building of Masjid Al-Aqsa on the Temple Mount site?
1. The original Temple was built by Nabi Suleiman Alaihi Salam, a Prophet of Allah Subhanahu Wata'aalah. As such, Muslims as Ummati of Nabi Muhammad Alaihi Salaat-u-Wassalam, respect and honor all Prophets of Allah.
2. The site is where Nabi Muhammad Alaihi Salaat-u-Wassalam performed Salah, during His (Alaihi Salaat-u-Wassalam) journey to the Heavens, titled as
Israh wal Mairaj. It is also the location where Nabi Muhammad Alaihi Salaat-u-Wassalam ascended to the Heavens on the heavenly creature,
Buraaq.
I don't know why it has political value to Pakistan or religious value to the doctrine and dogma of the state religion.
I would suggest you read and study the Noble Qur'an, as without doing so, you or anyone of us, is incapable of understanding the subject. For when you do, then you would understand that Masjid Al-Aqsa and Qubrat-ul-Sakhrah, nor Jerusalem have any "
political value" for Muslims. Rather, Jerusalem holds the key to everything that has transpired for the last 2000 years. The deceit and treachery of the Temple Mount Rabbis and King Herod, his wife and his sons, supported whole heartedly by the Jewish masses, at the time. Hence as a Muslim, it is a duty upon all who are the followers of Nabi Muhammad Alaihi Salaat-u-Wassalam, to study the Noble Qur'an, and in its light, challenge the Jews as well as the Zionists (who pretend to be both Jews and Christians) on their claim to the Holy Land. Since their claim is based on a LIE, and upon which they have continued to commit heinous acts of wickedness, to present day.