Grand Ayatollah Nasser Makarem Shirazi and Grand Ayatollah Hossein Nouri-Hamedani said this in their religious decrees issued on Sunday.
Ayatollah Shirazi said that any person or regime that threatens or attacks the leadership and religious authority in order to harm the Islamic Ummah and its sovereignty is subject to the ruling of confrontation.
Any denial of this or any support for such acts by Muslims or Islamic governments is forbidden, he added.
“All Muslims around the world must make these enemies regret their words and mistakes, and if they suffer hardship or loss, they will have the reward of a fighter in the path of Allah, God willing,” he stated.
“May Allah protect the Islamic community from the evil of the enemies,” he said.
Ayatollah Noori-Hamedani said that insulting the position of the Shiite authority and the person of Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei is considered an insult to the very principles of Islam.
“Today, His Eminence is leading the Islamic Ummah with all his strength and courage. There is no doubt that supporting him is obligatory, and weakening him is forbidden, especially in these circumstances when all the enemies of Islam, the Quran, and the Ahl al-Bayt (peace be upon them) have united,” he stated.
“Any attack or threat against him and the Shiite authority, whether by an individual or a state, is regarded as an act of enmity. Anyone who assists in this crime is considered equally responsible,” he said.
Grand Ayatollah Seyyed Ali-Akbar Hosseini Haeri, one of the senior Shia authorities and prominent scholars of Najaf, issued a statement following threats made by the US president and leaders of the Zionist regime against the Leader of the Islamic Revolution, Ayatollah Seyyed Ali Khamenei.
The Israeli regime unleashed its brutal aggression on the Islamic Republic on June 13, assassinating Iran's senior military commanders and nuclear scientists in targeted strikes, and killing ordinary civilians, including women and children.
The Israeli regime and the US president also issued threats against Ayatollah Khamenei. In his customary vile language, Trump on Friday launched a tirade of abuse at Ayatollah Khamenei, claiming that he had prevented the Israeli regime and the American armed forces from assassinating him.
In response, Iranian armed forces punished the Zionist regime with a barrage of advanced missiles, which pierced through Israel’s once-vaunted multilayered defense system.
The Iranian armed forces pounded the Israeli regime and its military and industrial infrastructure, using many new-generation missiles that efficiently hit the designated targets.
