Iran responded with missile strikes on USA targets in Iraq on January 8, injuring although not killing US troops.
Iran's supreme leader Ayatollah Ali Khamenei on Friday accused the governments of Britain, France and Germany of being "American lackeys" in the face of U.S. pressure over the nuclear accord.
U.S. President Donald Trump ordered the killing in a drone strike on January 3 of Qassem Soleimani, commander of the Quds Force, a unit of the Revolutionary Guards responsible for expanding Iran's influence overseas.
After the missile attack, the Iranian Revolutionary Guard mistakenly shot down a Ukrainian jetliner shortly after taking off from Tehran's global airport and killed all 176 passengers on board, especially Iranians.
Iran's supreme leader is expected to lead the main weekly Muslim prayers in Tehran on Friday, after a traumatic month in which the country had appeared on the brink of war with the United States and accidentally downed a Ukrainian passenger jet.
"It has been proven now, after about a year, that they are, in the true sense of the word, America's lackeys, and these cowardly governments are waiting for the Iranian nation to surrender", he said.
(AP Photo/Ebrahim Noroozi). People gather for a candlelight vigil to remember the victims of the Ukraine plane crash, at the gate of Amri Kabir University that some of the victims of the crash were former students of, in Tehran, Iran, Saturday, Jan. 11.
As the economic crisis has worsened, Iran has seen wave after wave of sporadic, leaderless protests.
As head of the Revolutionary Guard's elite Quds Force, Soleimani was the architect of Iran's regional military operations and its support for armed groups in Lebanon, Syria, Iraq and Yemen. When this came about, their assumption of responsibility sparked days of street protests that dispersed security forces with live ammunition and tear gas. The 80-year-old leader wept openly over the Soleimani funeral and vowed "hard retribution" against the United States.
Iran continued to comply with the nuclear deal despite USA sanctions until last summer, when it said it would no longer fully abide with the agreement if it received no economic benefits.
While the administration emphasises that it stands by the Iranian people, heavy United States sanctions reimposed by Trump have hastened the economy's deterioration and worsened economic conditions for ordinary Iranians, experts say.
Khamenei called the shooting down of the plane a "bitter accident" that made Iran as sad as it made its enemies happy.
Khamenei also lashed out at European powers such as France, Germany and the United Kingdom, calling them "the footmen of the US". "It will not be decided by the United States government and that's been our policy for nearly three years", Hook said.
Khamenei described the protestors as "stooges of the United States". "If you are standing by the Iranian [people], it is only to stab them in the heart with your venomous daggers".
Prime Minister Justin Trudeau has previously said US President Donald Trump's policies contributed to the heightened tensions that led to the catastrophe. "Of course, you have so far failed to do so and you will certainly continue to fail".
Earlier in the day President Hassan Rouhani emphasised in a televised speech that Iran "is working daily to prevent military confrontation or war", and maintained that a dialogue with the world was still "possible".