Huge crowds have turned out on the streets of Iran in state-organised rallies to mark the 40th anniversary of the country's Islamic Revolution.
The routes leading up to the square were packed with people as loudspeakers blared revolutionary anthems and slogans.
This year's anniversary comes as tensions rise with the United States and Iran grapples with the aftermath of President Donald Trump's pullout last May from the 2015 nuclear deal between Iran and world powers and tough US economic sanctions, re-imposed in November.
Ballistic missile capabilities were on display during the main march, including the Qadr F, a ground-to-ground missile with a 1,950-km (1,220-mile) range, Tasnim news agency said.
"We have not, and will not, request permission from anyone for increasing our defensive power and for building all kinds of. missiles", he told the crowd.
"We operate every day, including yesterday, against Iran and against its attempts to establish itself in the region", Netanyahu said ahead of his departure to the Warsaw Conference in Poland, answering a question about Israel's involvement in the attack. "We are doing everything necessary", he concluded.
Last week, Supreme Leader Ayatollah Ali Khamenei defended the "Death to America" chants, saying they are aimed at America's leaders such as Trump and not its people.
Trump was echoed by National Security Adviser John Bolton, who published a spate of tweets, in which he argued in particular that "the 40th anniversary of the Iranian regime only serves to highlight four decades of failure and broken promises".
"40 years of corruption".
"40 Years of Failure to accept that Iranians will never return to submission". 40 years of terror. "The regime in Iran has produced only #40YearsofFailure", he wrote. "The long-suffering Iranian people deserve a much brighter future", Trump posted on Twitter in both English and Farsi. On the fortieth anniversary of their revolution, they threatened to destroy Tel Aviv and Haifa. "Our presence in the 40th anniversary of the revolution is to show our support for the Islamic Republic", said one sign held by a protester.
Iranians thronged streets across the country, many with portraits of Ayatollah Ruhollah Khomeini, the Shiite cleric who toppled the Shah in the historic Islamic uprising.
The problem, for Khamenei, is that there is a public record of such virulent, hateful chanting going as far back as the 1979 Islamic Revolution.
Gen. Qassem Soleimani, the head of Iran's elite Quds Force, attended a rally in the southern city of Kerman.
State TV showed a cartoon of the Shah being thrown into the "dustbin of history", wearing clothes in US colours and holding Iranian newspapers headlined "The Shah has left!"
A number of Israeli and American flags were set on fire by the crowds.
Netanyahu is scheduled to meet with Russia's President Vladimir Putin in Moscow on February 21, where the two leaders are expected to discuss Israel's campaign against Iran in Syria.
Former public servant Saaghi insisted that it remained paramount for Iranians to stick by the revolution.