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Iran Conflict 2026
19MAR

Riyadh expels five Iranian diplomats

4 min read
08:52UTC

Saudi Arabia declared Iran's military attaché and four embassy staff personae non gratae, formally ending the China-brokered rapprochement that took Beijing years to build and the war three weeks to destroy.

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Key takeaway

Beijing's signature Middle East diplomatic achievement has been dismantled in three weeks of war.

Saudi Arabia declared Iran's military attaché and four embassy staff personae non gratae on Saturday, giving them 24 hours to leave the kingdom 1. The stated cause: "repeated Iranian attacks" on Saudi territory — attacks that have included ballistic missiles targeting Riyadh and the eastern provinces and daily drone strikes against oil infrastructure, including two consecutive days of hits on Kuwait's Mina Al-Ahmadi refinery , .

The expulsion formally ends the diplomatic relationship China restored in March 2023. That rapprochement came after a seven-year freeze triggered by Saudi Arabia's execution of Shia cleric Sheikh Nimr al-Nimr in January 2016 and the subsequent storming of the Saudi embassy in Tehran. Beijing spent years building the framework; the war dismantled it in three weeks. Qatar had already expelled its Iranian military and security attachés on 17 March after the Ras Laffan strikes . Saudi Foreign Minister Prince Faisal bin Farhan had declared that trust with Tehran was "completely shattered" and warned that Iranian escalation "will be met with escalation, whether on the political level or others" . Saturday's expulsion is the first concrete action on that warning.

For Beijing, the loss is specific. The Saudi-Iran accord was President Xi's proof that China could broker outcomes Washington could not — the centrepiece of an alternative to US-led regional security. That alternative is no longer operative. US naval forces control the Strait of Hormuz. US air defences protect Saudi airspace. Secretary Rubio's emergency arms sales — $8 billion to Kuwait, $8.5 billion to the UAE — bypassed congressional review to reach Gulf states within days . China's response has been humanitarian aid to Iran, Jordan, Lebanon, and Iraq and diplomatic rhetoric. No military assets. No security guarantees. Every Gulf capital is now making procurement and basing decisions on the assumption that Washington, whatever its political demands, delivers hardware and interceptors. Beijing delivers communiqués.

The diplomatic break also narrows Iran's post-war options. Riyadh and Doha were Tehran's two remaining interlocutors among the Gulf Arab states — the channels through which any future Ceasefire or de-escalation would need to pass. Both are now closed. Iran's Foreign Minister Araghchi has stated "we don't believe in a Ceasefire" and laid out conditions — US withdrawal from all regional bases, reparations — that no party is positioned to deliver . With The Gulf's diplomatic doors shut and China unable to reopen them, Tehran's path back to regional normalisation runs through Washington or nowhere.

Deep Analysis

In plain English

In March 2023, China brokered a historic deal restoring diplomatic relations between Saudi Arabia and Iran after seven years of hostility. It was Beijing's most significant geopolitical achievement in the Middle East and a demonstration that China could play the role of neutral power broker that Washington historically occupied. Saudi Arabia has now formally ended that arrangement by expelling Iranian diplomats. This matters far beyond the two countries: it signals to China that its regional diplomatic capital — carefully accumulated over years — can be undone within weeks when one party goes to war. It also removes one of the few remaining formal communication channels between states that are now, effectively, in opposing coalitions.

Deep Analysis
Synthesis

China's failure to leverage its 2023 mediation into any conflict-prevention capacity is the deeper strategic subtext. Beijing had no enforcement mechanism in the agreement and no tool to restrain Iran once war began. This damages China's sustained pitch as an alternative order-builder to the US security architecture — precisely when Beijing has been advancing that narrative most aggressively in the Global South. A China that cannot protect its own diplomatic achievements when they are stress-tested is a weaker broker for the post-conflict reconstruction role Beijing is reportedly already preparing to claim.

Root Causes

The 2023 rapprochement was structurally fragile because it was transactional rather than strategic. Saudi Arabia sought operational calm to protect Vision 2030 investment inflows and regional commercial normalisation; Iran sought reduced pressure and Gulf legitimacy. Neither party resolved the underlying rivalry over Gulf hegemony, Yemen, Lebanon, or the nuclear programme. Active Iranian drone attacks on Saudi territory made the transactional rationale untenable domestically — Riyadh could not maintain the fiction of normalisation while publicly intercepting Iranian ordnance.

Escalation

The expulsion removes Iran's only remaining official diplomatic presence inside the Gulf Cooperation Council's largest member state. Iran now has no formal channel to Riyadh through which to signal red lines or de-escalation intent. This communication vacuum raises the risk of miscalculation in the ongoing Iranian drone campaign against Saudi territory — particularly given the saturation volumes now being recorded.

What could happen next?
  • Consequence

    The expulsion eliminates Iran's last formal Gulf diplomatic channel, removing the only back-channel for communicating red lines without public escalation.

    Immediate · Assessed
  • Consequence

    China's role as neutral regional broker is materially damaged, reducing Beijing's leverage in any post-conflict settlement negotiations it seeks to lead.

    Medium term · Assessed
  • Risk

    Absence of Riyadh-Tehran diplomatic communication increases miscalculation risk in the ongoing Iranian drone campaign against Saudi territory.

    Short term · Suggested
  • Precedent

    Beijing's flagship regional diplomatic achievement collapsing within three weeks of active conflict signals structural limits to China's mediation model under conditions of open warfare.

    Long term · Assessed
Sources:Al Jazeera
Mentions:Fudan University →Iran →Lebanon →Tehran →Ceasefire →Mediation →Coalition →National Security Council (Iran) →Riyadh →Shia →Doha →Kuwait →Qatar →Persian Gulf →China →United States →European Council on Foreign Relations →Saudi Arabia →United Arab Emirates (UAE) →Gulf States (Saudi Arabia, UAE, Qatar, Kuwait, Oman, Bahrain) →European Council →de-escalation →Ras Laffan Industrial City →Prince Faisal bin Farhan →JCPOA (Joint Comprehensive Plan of Action) →Mina Al-Ahmadi refinery →Strait of Hormuz →Abbas Araghchi →Israel Defense Forces (IDF) →Marco Rubio →Islamic Revolutionary Guard Corps (IRGC) →
First Reported In

Update #44 · Trump: 48 hours to destroy Iran power grid

Al Jazeera· 22 Mar 2026
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Causes and effects
Caused by
Saudi FM: Gulf patience not unlimited
Saudi FM had declared trust with Iran 'completely shattered'; Saudi Arabia then formally expelled Iranian military attaché and embassy staff.
Occurred 17 Mar 2026
Read story →
This Event
Riyadh expels five Iranian diplomats
Eliminates China's most prominent Middle Eastern diplomatic achievement and consolidates US-led security architecture as the sole operational framework in the Gulf. Closes one of Tehran's two remaining diplomatic channels among Gulf Arab states.
Different Perspectives
South Korean financial markets
South Korean financial markets
South Korea, which imports virtually all its crude oil, is absorbing the war's economic transmission most acutely among non-belligerents. The second KOSPI circuit breaker in four sessions — with Samsung down over 10% and SK Hynix down 12.3% — reflects an industrial economy unable to reprice energy costs that have risen 72% in ten days. The market response indicates Korean industry cannot sustain oil above $100 per barrel without margin compression across manufacturing, semiconductors, and shipping.
Migrant worker communities in the Gulf
Migrant worker communities in the Gulf
The first confirmed civilian deaths in Saudi Arabia — one Indian and one Bangladeshi killed, twelve Bangladeshis wounded — fell on communities with no voice in the military decisions that placed them in harm's way. Migrant workers live near military installations because that housing is affordable, not by choice. Bangladesh and India face the dilemma of needing to protect nationals who cannot easily leave a war zone while depending on Gulf remittances that fund a substantial share of their domestic economies.
Azerbaijan — President Ilham Aliyev
Azerbaijan — President Ilham Aliyev
Aliyev treats the Nakhchivan strikes as a direct act of war against Azerbaijani sovereignty, placing armed forces on full combat readiness and demanding an Iranian explanation. The response is calibrated to maximise international sympathy while stopping short of military retaliation — Baku cannot fight Iran alone and needs either Turkish or NATO backing to credibly deter further strikes.
Oil-importing nations (Japan, South Korea, India)
Oil-importing nations (Japan, South Korea, India)
The Hormuz closure is an existential threat. Japan, South Korea, and India receive the majority of their crude through the strait — they will bear the heaviest economic cost of a war they had no part in.
Global South governments (Indonesia, Brazil, South Africa)
Global South governments (Indonesia, Brazil, South Africa)
Neutrality was possible when the targets were military. 148 dead schoolgirls made it impossible — no government can explain that away to its own citizens.
Turkey
Turkey
Has absorbed three Iranian ballistic missile interceptions since 4 March without invoking NATO Article 5 consultation. Each incident narrows Ankara's political room to continue absorbing without Alliance-level response.