Iran’s Supreme Leader Mojtaba Khamenei on Sunday called on Muslim nations, particularly neighboring Gulf Arab states, to unite against the "real enemy," six months since the start of the Middle East war.

The message, a clear swipe at the U.S. and Israel, was published on Khamenei’s official website and Telegram account for Islamic Unity Week, which marks ​the birthday of the Prophet Muhammad.

It marks his latest written communication since succeeding his father, Ayatollah Ali Khamenei, who was killed in the Feb. 28 U.S.-Israeli airstrikes that launched the conflict.

The younger Khamenei, who was injured in the same attack, has not been seen in public and Iranian authorities have released no video or audio footage of him since his appointment.

Urging regional leaders to put aside political divisions, Khamenei framed internal discord as beneficial solely to foreign adversaries, asking whether the Palestinians would have been left "so helpless" had the Muslim world stood united.