Nabil Fahmy, the newly appointed secretary-general of the Arab League, has been denied entry to the West Bank by Israeli authorities.
The blockage prevented what was intended to be his first official foreign visit since assuming the role earlier this month.
Fahmy stated that the restriction effectively barred him from reaching Ramallah, a key administrative center for the Palestinian Authority.
The incident underscores the deepening diplomatic rift between Israel and Arab institutions.
With the Arab League chief unable to conduct on-the-ground diplomacy, the episode highlights the practical limitations facing regional mediators.
The denial of access comes at a time when diplomatic channels are already strained by ongoing security operations in the region.