Feb. 11 (UPI) -- Iran on Monday marked the 40th anniversary of the Islamic Revolution with rallies around the country and a speech by President Hassan Rouhani.
Ayatollah Sayyid Ali Hosseini Khamenei said last week Iranians will continue chanting "Death to America," a long-running mantra, as long as the United States "remains evil."
"This nation has managed to establish a system of Islamic Republic and an independent system of government," Rouhani said, adding that Iran has foiled conspiracies led by the United States and Israel.
The revolution marked the return of exiled cleric Ayatollah Ruhollah Khomeini, an outspoken critic of former Iranian ruler Mohammad Reza Shah Pahlavi in 1979. Pahlavi left the country a month before the revolution for cancer treatment and never returned. The shah later traveled to the United States for treatment, a move that spurred Islamic students to take over the U.S. Embassy in Tehran and hold dozens of American workers for 444 days.
Present relations between the United States and Iran have frayed further under the administration of U.S. President Donald Trump, who abandoned the 2015 multi-national nuclear agreement in favor of new, tougher sanctions.
"The presence of people in this celebration means that plots by the enemies... have been defused," Rouhani said in his nationally-televised speech. "They will not achieve their ill-omened aims."
Last week, the United States called for more sanctions if Tehran continued development of a new ballistic missile system.