Just War & Who Declares War
In my own opinion, the Mount of Olives presents the strongest choice as the location of the Ascension & seems to have the support of tradition in the Holy Land. While on pilgrimage in 2017, I did not learn of any modern sites (i.e., in Galilee or Bethany) claiming the honor of being the Ascension site.
"At the end of the 4th century, the site was established as the place of the ascension by Emperor Constantine’s mother, Helena....A Byzantine church was built here....
"The Byzantine church survived until the 7th century when it was destroyed by Persians. It was soon rebuilt and finally destroyed by the Arab conquerors in the 10th century. The Crusaders rebuilt the church in the 12th century....
"In 1187, Jerusalem changed hands and Saladin turned the chapel into a mosque adding a stone dome and mihrab....
"The chapel holds a slab of stone bearing a right footprint. This is believed to be Jesus’ footprint left here as he stepped up to heaven. The left footprint in stone has been moved to the Al-Aqsa Mosque on Temple Mount" (https://www.beinharimtours.com/the-church-of-ascension/).