Iran–Saudi Arabia proxy conflict in the context of Yemeni civil war (2014–present)

The Arab Cold War (Arabic: الحرب العربية الباردة al-ḥarb al-`arabiyyah al-bāridah) was a political rivalry in the Arab world from the early 1950s to the late 1970s or early 1990s and a part of the wider Cold War. It is generally accepted that the beginning of the Arab Cold War is marked by the Egyptian Revolution of 1952, which led to Gamal Abdel Nasser becoming president of Egypt in 1956. Thereafter, newly formed Arab republics, inspired by revolutionary secular nationalism and Nasser's Egypt, engaged in political rivalries with conservative traditionalist Arab monarchies, influenced by Saudi Arabia. The Iranian Revolution of 1979, and the ascension of Ayatollah Ruhollah Khomeini as leader of Iran, is widely seen as the end of this period of internal conflicts and rivalry. A new era of Arab-Iranian tensions followed, overshadowing the bitterness of intra-Arab strife.

Nasser espoused secular pan-Arab nationalism and socialism as a response to the perceived complicity of the Arab monarchies in Western interference in the Arab world. He also opposed the monarchies' support of rentierism and Islamism. Later Nasser embraced the Palestinian cause, albeit within the framework of pan-Arabism. After Egypt's political victory in the 1956 Suez Crisis, known in the Arab world as the Tripartite Aggression, Nasser and his associated ideology quickly gained support in other Arab countries, from Iraq in the east to French-occupied Algeria in the west. In several Arab countries, such as Iraq, North Yemen and Libya, conservative regimes were overthrown and replaced by revolutionary republican governments. Meanwhile, Arab countries under Western occupation, such as Algeria and South Yemen, experienced nationalist uprisings aimed at national liberation. At the same time, Syria, which was already strongly Arab nationalist, formed a short-lived federal union with Egypt called the United Arab Republic. Several other attempts were made to unite the Arab states in various configurations, but all attempts were unsuccessful.

Hezbollah involvement in the Syrian civil war has been substantial since the beginning of armed insurgency phase of the Syrian civil war in 2011, and evolved into active support for Syrian government forces and troop deployment from 2012 onwards. By 2014, Hezbollah was deployed across Syria. Hezbollah has also been very active in preventing Al-Nusra Front and Islamic State penetration into Lebanon, being one of the most active forces in the Syrian civil war spillover in Lebanon. Hezbollah's involvement in Syria came to an end with the fall of the Assad regime as a result of a renewed rebel offensive in late 2024, leading to clashes between Hezbollah and the new Syrian transitional government.

In the past, Hezbollah has served a strategic arm of Iran in the region, playing a key role in the Iran–Israel and Iran–Saudi Arabia proxy conflicts. On a number of occasions, Hezbollah weapon convoys in Syria and Syrian-Lebanese border areas were attacked, presumably by the Israeli military. Hezbollah convoys and militant camps have also been attacked by various Syrian rebel factions.

The Yemeni civil war (Arabic: الحرب الأهلية اليمنية, romanized: al-ḥarb al-ʾahlīyah al-yamanīyah) is an ongoing multilateral civil war that began in late 2014 mainly between the Rashad al-Alimi-led Presidential Leadership Council and the Mahdi al-Mashat-led Supreme Political Council, along with their supporters and allies. Both claim to constitute the official government of Yemen.

The civil war began in September 2014 when Houthi forces took over the capital city Sanaa, which was followed by a rapid Houthi takeover of the government. On 21 March 2015, the Houthi-led Supreme Revolutionary Committee declared a general mobilization to overthrow then-president Abdrabbuh Mansur Hadi and expand their control by driving into southern provinces. The Houthi offensive, allied with military forces loyal to former Yemeni president Ali Abdullah Saleh, began fighting the next day in Lahij Governorate. By 25 March, Lahij fell to the Houthis and they reached the outskirts of Aden, the seat of power for Hadi's government. Hadi fled the country the same day. Concurrently, a coalition led by Saudi Arabia launched military operations by using air strikes and restored the former Yemeni government. Although there has been no direct intervention by the Iranian government in Yemen, the civil war is widely regarded as part of the Iran–Saudi proxy conflict.