Intelligence agencies have assessed Russia, China and Iran are the biggest peddlers of influence operations in 2024.

U.S. intelligence agencies accuse Iranian hackers of stealing “non-public material from former President Trump’s campaign” and sending it to “individuals ... associated with President Biden’s campaign."

The U.S., Canada and Australia have hit a group of Iranian officials with sanctions for their participation in quelling protests and detaining people following the death of Mahsa Amini

Iran says it launched a satellite into space with a rocket built by the country’s paramilitary Revolutionary Guard

Iran says it launched a satellite into space with a rocket built by the country’s paramilitary Revolutionary Guard

On the streets of Iranian cities, it’s becoming more common to see a woman passing by without a mandatory headscarf, or hijab, as the second anniversary of the death of Mahsa Amini and the mass protests it sparked approaches

The United States and Britain have formally accused Iran of supplying short-range ballistic missiles to Russia for its war in Ukraine and will take measures to punish those involved

The United States has informed allies that it believes Iran has transferred short-range ballistic missiles to Russia for its war in Ukraine

A retaliation "is definitive and will be measured and calculated," Iran's foreign minister said. The U.S. noted that two aircraft carrier strike groups will remain in the region to defend Israel.

The group, APT42, is associated with the Islamic Revolutionary Guard Corps (IRGC) according to Google.

ABC News' Linsey Davis speaks with retired Lt. Gen. Douglas Lute on the possibility of a widening conflict in the Middle East as the U.S. moves military assets to the region.

U.S. officials say announcing its military moves in the region is a message to Iran.

Antony Blinken told his G7 counterparts on Sunday that a response from Iran and Hezbollah could begin in the next 24 to 48 hours, according to two officials familiar.

The U.S. has sent additional ships and fighter jets to the region in support of Israel as Americans are warned to leave neighboring Lebanon to ensure their safety.

White House Deputy National Security Adviser Jon Finer said the U.S. is "preparing for every possibility" regarding potential Iran retaliation.

George Stephanopoulos interviews White House deputy national security adviser Jon Finer on “This Week.”

The U.S. has deployed ships and fighter jets to the region and issued a warning to Americans in Lebanon, ahead of an expected strike on Israel by Iran for the assassination of a top Hamas leader.

An expert said that the Israeli assassination of a Hamas leader could mean all-out war in the Middle East or lead to a quick resolution of the conflict in Gaza.

Ismail Haniyeh, the political leader of Hamas, has been killed in Tehran along with his bodyguard, Iran’s Islamic Revolutionary Guard Corps said in a statement.

Leaders across the Middle East voiced concerns after Israel claimed responsibility for the strike killing a top Hezbollah leader in Lebanon.

National security expert Morgan Ortagus explains how this could influence Trump's approach to Iran.

The U.S. Secret Service in recent weeks had increased Donald Trump's security detail due to intelligence Iran threated to assassinate him, according to three officials.

Iranian government actors seeking to "take advantage" of pro-Palestine protests, including funding some: DNI

Polls opened Friday in Iran for the run-off presidential election as none of the four candidates won more than 50% of the votes in the first round on June 28.

Officials say to expect a series of U.S. strikes against multiple targets.

Iran’s President Ebrahim Raisi passed away in a helicopter crash on May 19, 2024.

Iran's first vice president, Mohammad Mokhber, will assume the presidency following President Raisi's death in a helicopter crash Sunday night, with the approval of the supreme leader.

ABC contributor Col. Steve Ganyard, a former fighter pilot and a former State Department official, weighs in on what may have caused Iran helicopter crash.

ABC News contributor Col. Steve Ganyard spoke with "Start Here."

Alinejad said she started dancing in the street following the news of Raisi's death, calling him the "Butcher of Iran."

Iranian state TV confirmed that Iranian President Ebrahim Raisi and Foreign Minister Hossein Amirabdollahian were killed in a helicopter crash.

Officials confirmed the deaths of President Ebrahim Raisi, Foreign Minister Hossein Amir-Abdollahian and several others after their helicopter crashed in northwestern Iran due to weather conditions.

With Iranian President Raisi's death confirmed, a new election will be held in 50 days.

Iran's President Ebrahim Raisi is dead following a helicopter crash, Iranian state media announced Monday morning local time.

Rescuers and authorities searching for missing Iranian officials, including Iranian President Ebrahim Raisi, after their helicopter crashed on their way back from the Azerbaijan border.

Both Iran and Israel appear to be de-escalating the conflict after the latest strike.

A day after Israeli fighter aircraft boldly struck an air defense radar site inside Iran, top US and Israeli officials declined to publicly acknowledge the incident.

The U.S. had made clear that whether or not to strike back at Iran was a decision for Israel alone to make.

ABC News Chief Global Affairs Correspondent Martha Raddatz reports on Israel’s retaliatory attack on Iran.

The strike was in response to Iran's attack last Saturday

ABC News spoke to several women in Iran who said the fear of an imminent war with Israel has been added to a long list of worries and hardships.

US officials say those who were sanctioned enabled Iran's drone production following Iran's attack on Israel.

Rep. Jason Crow, D-Colo, talks about the United States protecting Americans, de-escalating conflict in the Middle East, and a bipartisan foreign aid bill after Iran’s missile attack on Israel.

The sanctions include targeting Iran's missile and drone program.

Treasury Secretary Janet Yellin said the United States will soon impose new sanctions on Iran, targeting its missile and drone programs.

U.S. officials said they believe Iran's attack was mostly a failure and the goal now should be a response with broad international support.

Prime Minister Benjamin Netanyahu convened his war cabinet for the third consecutive day to discuss a response to the barrage of more than 300 missiles and drones early Sunday.

Military officials are keeping a close eye on Iran's allies following its attack on Israel.

President Joe Biden addressed Iran's retaliatory attack against Israel while the prime minister of Iraq was visiting the White House.

Chris Costa, former National Security Council senior director for counterterrorism, shares his analysis of what this means for both countries going forward.