Below from Wiki is an example.
Shi'ite Militias in Iraq
Iranian proxies killed an estimated 1,100 US troops in Iraq. In addition, insurgents supported by Iran reportedly committed acts of terrorism. The United States State Department states that weapons are smuggled into Iraq and used to arm Iran's allies among the Shiite militias, including those of the anti-American cleric Muqtada al-Sadr and his Mahdi army.
During his address to the United States Congress on September 11, 2007, Commanding Officer for the United States forces in Iraq, General David Petraeus noted that the multinational forces in Iraq found that Iran's Quds force had provided training, equipment, funding, and direction to Shi'ite militia groups. “When we captured the leaders of these so-called special groups … and the deputy commander of a Lebanese Hezbollah department that was created to support their efforts in Iraq, we’ve learned a great deal about how Iran has, in fact, supported these elements and how those elements have carried out violent acts against our forces, Iraqi forces and innocent civilians.”
In 2015, Michael Weiss and Michael Pregent accused the Popular Mobilization Units, an organization of 40 mainly-Shi'ite militias backed by Iran, of committing extensive atrocities against Sunni civilians in the course of their war against the Islamic State of Iraq and the Levant, including "burning people alive in their houses, playing soccer with severed human heads, and ethnically cleansing and razing whole villages to the ground." Weiss and Pregent even suggested that "Iran's Shi'ite militias aren't a whole lot better than the Islamic State."
Aggrey Adoli, police chief in Kenya's coastal region, said on 22 June 2012 that two Iranians, Ahmad Abolfathi Mohammad and Sayed Mansour Mousavi, believed to members of Iran's Revolutionary Guards' Quds Force, were arrested and suspected of being involved in terrorism. One of the Iranians led counter-terrorism officers to recover 15 kilograms of a powdery substance believed to be explosive. The two Iranians allegedly admitted to plotting to attack United States, Israeli, Saudi, or British targets in Kenya. In court, Police Sgt. Erick Opagal, an investigator with Kenya's Anti-Terrorism Police Unit, said that the two Iranians had shipped over 100 kilograms of powerful explosives into Kenya.
It was later revealed that the targets included Gil Haskel, Israel's ambassador to Kenya. During a visit to Kenya in August, Israeli Deputy Foreign Minister Danny Ayalon praised Kenya for its efforts in stopping Iranian terror threats against Israeli and Jewish targets. Uganda, Ethiopia, and Kenya all expressed concern with Ayalon regarding Iran's attempts to increase terror activity in Africa.
Main article: AMIA bombing
On 18 July 1994, there was an attack on the Argentine Israelite Mutual Association (AMIA) building in Buenos Aires, Argentina, which killed 85 people and injured hundreds. It was Argentina's deadliest bombing ever. Argentina accused Tehran in 2006 of being behind the attacks, and indicted several senior Iranian officials, including Hashemi Rafsanjani and Ahmad Vahidi, as well as Hezbollah's Imad Mughniyah.
Main article: 2012 Bangkok bombings
On 14 February 2012, a series of explosions occurred in Bangkok, Thailand. Thai authorities said that the bombings were a botched attempt by Iranian nationals to assassinate Israeli diplomats. Several Iranians were arrested and charged for the attacks, one of whom was badly injured.
In October 2018, France froze Iranian financial assets in response to an alleged bomb plot to be carried out against an opposition group at a rally in Paris. The plot was said to be against the National Council of Resistance of Iran, which styles itself as Iran’s government-in-exile. Assadollah Assadi, an Iranian diplomat in the Vienna embassy, was arrested in Germany in connection with the alleged plot to blow up a meeting of Iranian dissidents in Paris in June.
In October 2018, Denmark said the Iranian government intelligence service had tried to carry out a plot to assassinate an Iranian Arab opposition figure on its soil. The planned assassination was of an exiled leader of the Arab Struggle Movement for the Liberation of Ahvaz (ASMLA). Sweden extradited a Norwegian national of Iranian background to Denmark in connection with the foiled plot against the ASMLA leader.