It must be noted: According to the Poskei Hador one is absolutely forbidden to visit the Temple Mount, and there is an Issur Kares for one that goes there.
Four years ago on Sukkos, Israeli President Shimon Peres paid a visit to the Sukkah of Maran Hagon Rav Elyashiv ZATZAL, where Rav Elyashiv called on the President to prevent Jews from visiting Har HaBayis, stating it is an act that that is viewed as extremely provocative by the goyim. Maran stated everything possible must be done to avoid a religious war, and the provocateurs are playing with fire.
Maran is quoted as explaining to the president that Halacha forbids going onto Har HaBayis but today, it is more than this, it is an act that may lead to a religious war and bloodshed.
This is and remains the view of poskei hador. This is also the view of the Chief Rabbinate of Israel. Among the rabbonim who share this view are HaGaon HaRav Chaim Kanievsky Shlita, HaGaon HaRav Shmuel Halevy Wosner Shlita, HaGaon HaRav Gershon Edelstein Shlita, Maran HaGaon HaRav Aaron Yehuda Leib Shteinman Shlita, Maran HaGaon HaRav Ovadia Yosef ZT”L, Maran Hagon HaRav Yosef Shalom Elyashiv ZT”l and many others.
(YWN – Israel Desk, Jerusalem)