From Shadow War to Direct Conflict – Israel vs. Iran
The Middle East has been a region of constant tension for decades, but the events of June 2025 marked a dangerous new chapter. On June 21, the United States directly bombed three Iranian nuclear facilities, joining a war that Israel had started a week earlier. The 12-day exchange of strikes between Israel, Iran, and the United States widened a conflict that had been building for years.
Via Financial Times
What began as disputes over Iran’s nuclear program grew into multiple wars involving Hamas, Hezbollah, the Houthis, and finally a confrontation between Israel and Iran, with America pulled in. This article traces the key steps that led to this intense showdown.
Early Nuclear Diplomacy with Iran (2013-2018)
Efforts to limit Iran’s nuclear program started with serious talks in the early 2010s. In November 2013, Iran and the P5+1 countries, the United States, United Kingdom, France, China, Russia, and Germany, signed the Joint Plan of Action in Geneva. This short-term agreement was a first step. Iran agreed to pause some nuclear activities, and in return, it received limited relief from economic sanctions. The goal was to build trust for a bigger, long-term deal.
Via Council on Foreign Relations
Negotiations continued in Vienna starting in February 2014. These talks were tough and lasted over a year. Many people worried that Iran might develop nuclear weapons, though Iran always said its program was for peaceful purposes like energy and medicine. In March 2015, Israeli Prime Minister Benjamin Netanyahu spoke to the U.S. Congress.
He strongly opposed the emerging deal, warning that it would not stop Iran from getting a bomb. His speech created tension between Israel and the Obama administration. On July 14, 2015, the groups announced the Joint Comprehensive Plan of Action, or JCPOA. Iran accepted strict limits on how much uranium it could enrich and store.
Via The Wall Street Journal
It also allowed international inspectors regular access to its sites. In exchange, many sanctions were lifted, helping Iran’s economy. The deal was formally adopted in October 2015, and by January 2016, the International Atomic Energy Agency confirmed Iran was following the rules. Sanctions from the United Nations were removed.
The deal had critics from the start. When Donald Trump became president in January 2017, he called it a bad agreement. In early 2018, Israel revealed it had stolen secret Iranian documents showing past work on nuclear weapons. This information helped convince Trump to leave the deal. On May 8, 2018, he announced the U.S. withdrawal and planned to impose the toughest sanctions ever on Iran.
Via RUSI
The Maximum Pressure Campaign (2019-2021)
After leaving the JCPOA, the Trump administration started a “maximum pressure” strategy. The goal was to force Iran back to the negotiating table by hurting its economy severely. Tensions rose quickly. In June 2019, Japanese Prime Minister Shinzo Abe visited Iran to ease the strain, but Iran’s leaders refused to talk with Trump.
Iran began breaking deal limits. In July 2019, it went over the allowed amount of low-enriched uranium. Later that year, in September, drones attacked Saudi oil facilities at Abqaiq and Khurais, cutting oil production in half for a time. The U.S. and Saudi Arabia blamed Iran, though Iran denied it. Iran kept advancing its program. In November 2019, it started enriching uranium again at the underground Fordow facility. European countries criticized this move.
Via Atlantic Council
Violence spread beyond the nuclear issue. In December 2019, an Iran-backed militia in Iraq fired rockets that killed an American contractor. The U.S. responded with strikes, leading to more attacks. The biggest escalation came on January 3, 2020, when a U.S. drone killed Iranian General Qassim Soleimani in Baghdad. Soleimani led Iran’s elite Quds Force and supported groups fighting U.S. allies. Iran fired missiles at U.S. bases in Iraq days later.
During the chaos, Iran accidentally shot down a Ukrainian passenger plane, killing everyone on board. Later in 2020, Israel killed Iran’s top nuclear scientist, Mohsen Fakhrizadeh. When Joe Biden became president in January 2021, he wanted to return to the nuclear deal. Talks dragged on, but Iran installed advanced centrifuges at Fordow that could enrich uranium much faster.
Via CNN
The Israel-Hamas War Ignites Regional Fighting (2023-2024)
The conflict exploded on October 7, 2023, when Hamas launched a surprise attack on southern Israel. More than 1,100 Israelis were killed, and hundreds were taken hostage. Israel responded with heavy airstrikes on Gaza. The next day, Hezbollah in Lebanon started firing rockets into Israel. Israel shelled back. Soon, the Iran-backed Houthis in Yemen joined by attacking ships in the Red Sea. Israel began a ground invasion of Gaza on October 27, 2023.
Fighting was intense, and a short truce in late November allowed some hostage and prisoner exchanges. But war resumed, causing a severe humanitarian crisis in Gaza. In 2024, the U.S. and U.K. struck Houthi targets to protect shipping. On April 1, Israel hit Iran’s consulate in Syria, killing generals. Iran fired hundreds of missiles and drones at Israel for the first time openly. In July 2024, Israel killed Hamas leader Ismail Haniyeh in Tehran.
Via Geopolitical Monitor
This showed Israel could strike deep inside Iran. Efforts to ease nuclear tensions continued. In September 2023, the U.S. released frozen Iranian funds and swapped prisoners. But on what was supposed to be a sanction-relief day in October 2023, European countries kept restrictions because Iran had expanded enrichment.
Israel-Hezbollah War Escalates (September-December 2024)
By late 2024, fighting with Hezbollah had grown much worse. On September 23, Israel launched huge airstrikes in Lebanon. Four days later, it killed Hezbollah’s long-time leader, Hassan Nasrallah, in Beirut. On October 1, Israel sent ground troops into Lebanon. Iran responded with a large missile attack on Israel. Damage was limited thanks to defenses.
Via Axios
Israel killed Hamas leader Yahya Sinwar, who planned the October 7 attack, on October 17. Later that month, Israel struck military targets inside Iran. A ceasefire between Israel and Hezbollah came on November 27. Both sides agreed to pull back forces. In December, Syrian President Bashar al-Assad was overthrown.
Rebels took Damascus, and Israel moved troops into southern Syria while bombing Syrian military sites. In January 2025, a temporary ceasefire started between Israel and Hamas on January 19. It included hostage and prisoner swaps and more aid to Gaza. Donald Trump returned to the White House on January 20 after winning the 2024 election. In Syria, rebel leader Ahmed al-Sharaa became president.
Via The Star
Renewed Nuclear Talks Fail (March-May 2025)
Hope for peace appeared when Israel broke the Gaza ceasefire in March 2025 with new strikes and a blockade. Indirect U.S.-Iran talks began in Oman on April 12, led by American and Iranian officials. They continued in Rome in May. Many hoped a new deal could reduce tensions. But deep mistrust remained. Iran had advanced its nuclear work far beyond JCPOA limits. Israel worried Iran was close to a bomb and pushed for strong action.
Everything changed on June 13, 2025. Israel launched major airstrikes on Iranian nuclear and military sites and killed several top officials. Nuclear talks stopped immediately. Iran struck back the next day with ballistic missiles on Israeli cities. Israeli attacks continued. On June 21, the United States entered the fight. American planes bombed three key Iranian nuclear sites: Natanz, Isfahan, and Fordow.
Via CNN
The underground Fordow site could only be badly damaged by special U.S. weapons. Israel had asked for American help to hit it effectively. Iran fired missiles at a U.S. base in Qatar on June 23. That same day, President Trump announced a ceasefire between Israel and Iran. The short war caused fear of a larger conflict. Oil prices jumped, and people around the world worried about radiation risks and wider fighting.
Why the Conflict Reached This Point
Years of failed diplomacy set the stage. The 2015 nuclear deal brought hope but collapsed when the U.S. left in 2018. Sanctions hurt Iran, but it kept building better centrifuges and larger uranium stockpiles. Regional wars added fuel. The Gaza conflict after October 7, 2023, pulled in Hezbollah and the Houthis. Attacks and assassinations slowly removed the old rules that had kept Israel and Iran from direct war.
Via The New York Times
When talks failed again in 2025, Israel decided it could not wait. It struck first to damage Iran’s nuclear program. The U.S. joined because of its close alliance with Israel and its worry about Iran getting a weapon. The ceasefire ended the intense bombing, but problems remain. Iran’s program is damaged but not destroyed. Trust is low on all sides. The Middle East is still unstable, and many fear more fighting ahead if new agreements are not reached.
Explore the Escalation Toward an Israel-Iran War
The 12-day war in June 2025 between Israel, Iran, and the United States sharply escalated Middle East tensions. Sparked by Israeli strikes on Iranian nuclear and military sites, the conflict ended with a U.S.-brokered ceasefire on June 23. While hundreds were killed and key facilities damaged, the fighting stopped short of a wider war. Six months later, the region remains tense, with no lasting resolution in sight.
Via Ny times
The strikes disrupted Iran’s nuclear program but did not cripple it. Some sites were damaged, yet enriched uranium had been moved in advance, allowing Iran to slowly resume work. Its missile program recovered more quickly, raising alarm in Israel, which warns of future action if Iran advances further. Tehran, meanwhile, has focused on rebuilding defenses and insists it will not abandon enrichment.
The ceasefire has largely held, but diplomacy is stalled. With nuclear talks frozen and regional instability ongoing, the conflict has been resolved little and left the risk of another, potentially larger war hanging over the region.
