The document instructs US officials to communicate to foreign governments by March 20 a request to "move expeditiously to diminish the capabilities of Iran and Iran-aligned terrorist groups from attacking our respective nations and citizens," the report said on Monday.
Rubio's message does not specify the exact nature of the alleged increased risk of attacks from Iran or its allies, but emphasizes that the best strategy against Tehran's actions is a combined approach, the report added.
On February 28, the United States and Israel launched strikes on targets in Iran, including in Tehran, causing damage and civilian casualties. Iran responded by striking Israeli territory and US military facilities in the Middle East.
The US and Israel initially claimed their "preemptive" attack was necessary to counter the perceived threat coming from Iran’s nuclear program, but they soon made it clear that they want to see a change of power in Iran.
Iran's Supreme Leader Ayatollah Ali Khamenei was killed on the first day of the military operation. The Islamic Republic declared 40 days of mourning.
Russian President Vladimir Putin described Khamenei’s assassination as a cynical violation of international law. The Russian Foreign Ministry condemned the US-Israeli operation and called for an immediate de-escalation and an end to hostilities.