The US envoy to the United Nations said during an emergency Security Council meeting that "the voices of the Iranian people should be heard."

US Ambassador Nikki Haley Haley spoke Friday after her country called the meeting, Associated Press said in a report.

"Today the people of Iran are speaking to their government and their message is undeniable: stop the support for terrorism; stop giving billions of our money to killers and dictators; stop taking our wealth and spending it on foreign fighters and proxy wars. Think of us," she said.

Haley said the international community must also "do more" to prevent Iran from silencing protesters' messages, particularly by blocking some social media platforms.

Haley said the emergency meeting on the protests in Iran is putting the Islamic Republic on notice that "the world will be watching what you do."

"The Iranian people will determine their own destiny. And let there be no doubt whatsoever: the United States stands unapologetically with those in Iran who seek freedom for themselves, prosperity for their families and dignity for their nation. We will not be quiet,” she added.

At least 21 people have been killed amid the anti-government rallies and unrest that began last week.

Iran has also seen three days of large pro-government demonstrations.

Russia's deputy foreign minister, Sergei Ryabkov, has portrayed the Security Council meeting as an American attempt to violate Iran's sovereignty.