How Enmity between Iran and Saudi Arabia to 'harmony', recent developments

After a long dispute, Iran and Saudi Arabia have reached an agreement to restore diplomatic and trade relations. The tension in the relationship between these two countries has increased the crisis in the Middle East, deepening the conflict in Yemen and Syria. The two countries agreed to restore relations yesterday. China mediated it. The announcement was made after a meeting of the top security officials of the two Middle Eastern superpowers in the country's capital, Beijing. This report is about some recent incidents of conflict between the two countries. 2011: Arab Spring This year, pro-democracy protesters protested in various countries of the Middle East to demand change in authoritarian regimes. At that time, Saudi Arabia complained that Iran had incited protests against the royal family in Bahrain. Saudi Arabia sent thousands of troops to Bahrain to quell the protests. Iran, however, denies the allegations. 2011: Syria war After the start of the war in Syria in 2011, Iran-Saudi Arabia again faced each other. Shia Muslim-dominated Iran supports Syrian President Bashar al-Assad. Iran began to provide troops and financial support for Assad's forces to fight against Sunni rebels. On the other hand, Sunni Muslim-dominated Saudi Arabia supports rebel groups in Syria. Then in 2014, Saudi Arabia joined the US-led anti-IS coalition. 2015: Yemen war Saudi Arabia supported the internationally recognized government of Yemen when the civil war in Yemen broke out in 2015. Launched attacks against anti-government rebel groups. In particular, attacks in areas where the anti-government have strong positions. Meanwhile, Iran began to support the rebels. 2015: Death in Mecca stampede Tensions between Saudi Arabia and Iran have risen again after the death of many pilgrims who were trampled Mecca during the Hajj this year. Iran accuses Saudi Arabia of failing to manage the world's largest pilgrimage (Hajj). About two thousand pilgrims who went for Hajj lost their lives due to the trampling of the service. Among them, more than 400 worshipers were citizens of Iran. Because of this, the dispute between the two countries started to increase again. 2016: Saudi Arabia severed ties Saudi Arabia executed prominent Shiite leader Nimr four months after the Mecca stampede that killed hundreds of thousands of worshipers. This Shiite leader was a critic of the Saudi government. Protesters attacked the embassy  Saudi Arabia in Tehran in protest. At the same time, Iran's Supreme Leader Ayatollah Ali Khamenei warned of "divine retribution" for Nimr's execution. After that, Saudi Arabia severed all ties with Iran. 2016: Iran boycotts Hajj In the same year, Iran stopped its citizens from participating in Hajj. After this incident, Saudi Arabia launched a Persian language television to promote the Hajj. According to Riyadh, this 24-hour satellite channel will broadcast the Hajj ceremony and all worship services from the Grand Mosque of Khamenei condemned Saudi Arabia's handling of the Hajj and advised Muslim countries to consider ending Riyadh's control over the holy Hajj. 2017: Qatar  A regional crisis began in June this year when Saudi Arabia, along with its allies the United Arab Emirates, Bahrain and Egypt, imposed a blockade on Qatar. By imposing a sea, land and air blockade against Qatar, Saudi Arabia and its allies claim that Qatar, like Iran, is undermining regional stability by supporting terrorism. Qatar, however, denied the allegations. The embargo against Qatar was lifted in January 2021. 2017: Riyadh detects missile In November 2017, Saudi Arabia detected a ballistic missile in the airspace of Riyadh International Airport. Riyadh alleges the missile was supplied by Iran and was fired from Houthi-controlled areas in Yemen. According to a report published by Saudi Arabia's state-run news agency Saudi Press Agency, Saudi Crown Prince Mohammed bin Salman told then British Foreign Secretary Boris Johnson, "Iran's actions amount to war against Saudi Arabia." 2017: Lebanon's prime minister resigns Lebanese Prime Minister Saad Hariri suddenly resigned in November this year. His resignation was unexpected for Riyadh. Hariri alleged that Iran is trying to occupy his country through Hezbollah. Later, however, he withdrew his resignation letter. The announcement and withdrawal of Hari's resignation plunged Lebanon into a political crisis. The move was seen as part of a Saudi effort to counter Iran's influence in Lebanon. 2018: US withdrawal from the Iran nuclear deal In May 2018, then US President Donald Trump announced the unilateral withdrawal of the US from the Iran nuclear deal. Saudi Arabia and Israel praised the US move. 'If Iran develops a nuclear weapon, we will do so as soon as possible,' Saudi Crown Prince Mohammed bin Salman warned in an interview on American television. At the same time, he also commented that Khamenei is the 'new Hitler'. 2019: Attack on Saudi Arabia This year, there have been a series of attacks on various facilities in Saudi Arabia. Among them, there was an attack on a facility known as the heart of Saudi's energy industry. Saudi Arabia's crude oil production fell by half. Saudi Arabia blamed Iran for these attacks. However, Iran denied such allegations of Saudi Arabia. However, Yemen's anti-government rebel groups claimed responsibility for the attacks in Saudi