"The Saudi government has taken a strange action and cut off its diplomatic relations with the Islamic Republic of Iran to cover its crimes of beheading a religious leader in its country," Rouhani said. "Undoubtedly, such actions can't cover up that big crime."
The diplomatic standoff between Iran and the kingdom began Saturday, when Saudi Arabia executed Shiite cleric Sheikh Nimr al-Nimr and 46 others convicted of terror charges — the largest mass execution carried out by the kingdom since 1980. It's not clear whether al-Nimr was beheaded with a sword, though Saudis routinely use that form of execution. Saudi Arabia and Iran have long vied for influence in the Middle East. Their rivalry deepened following the toppling of Saddam Hussein in Iraq and the chaos of the Arab Spring, which gave rise to proxy wars in Syria and Yemen.