Saudi Arabia launches Operation Decisive Storm in Yemen
On 26 March 2015 a Saudi-led coalition began air strikes in Yemen against the Houthi takeover, with Mohammed bin Salman as defence minister. In the causal graph this event weakens Yemen Houthi war / Red Sea shipping crisis, a driver that strengthens Global deaths from organized violence (UCDP) — an improving welfare path.
Read the full account
On 26 March 2015 a Saudi-led coalition began air strikes in Yemen against the Houthi takeover, with Mohammed bin Salman as defence minister.
Context
UN agencies later documented civilian harm and blockade effects. The king authorised; the defence minister ran the campaign; UAE and others joined. He did not drop every munition.
Qatar blockade 2017 is a different file. Khashoggi is a different date.
The Crown Prince and Prime Minister of Saudi Arabia chairs the Council of Ministers and, in practice, the Public Investment Fund and Vision 2030 delivery. The King remains head of state. Royal decrees, cabinet decisions, and PIF board papers are the instruments. He does not write a UN resolution, an ODNI assessment, or a US CAATSA designation.
Why it matters
The path is humanitarian access and forced displacement: a completed coalition air war in Yemen is a dated civilian-harm instrument.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Direct responsibility
responsibility level 0.75 · verified
He was defence minister and politically owned the campaign. The king authorised. Coalition partners flew.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactSaudi Arabia launches Operation Decisive Storm in Yemen
- weakensDriverYemen Houthi war / Red Sea shipping crisis
- strengthensIndicatorGlobal deaths from organized violence (UCDP)
provisional weight · verified
Strengthens · 70% impact strength (driver → indicator)
Observed
245k deaths per year · 195k above the normal line (2025)
Worse than normalAbove normal = worse
- FactSaudi Arabia launches Operation Decisive Storm in Yemen
- strengthensDriverForced-Displacement Scale
- strengthensIndicators (2)People Internally Displaced by Conflict and Violence (IDMC)
impact weight 0.55 · Effect from 26 March 2015 · verified
Coalition war in Yemen produced large civilian displacement.
Strengthens · Relationship strength 0.44 (weight 0.55 × strength 0.8)
Observed
69M people (stock, end-of-year) · 28M above the normal line (2025)
Worse than normal3 readings, 2023–2025: rose from 68M people (stock, end-of-year) to 69M people (stock, end-of-year).
Above normal = worse
- Worse
Strengthens · Relationship strength 0.25 (weight 0.55 × strength 0.46)
Observed
10.4% · 10.2 above the normal line (2024)
Worse than normal7 readings, 2018–2024: fell from 11.1% to 10.4%.
Above normal = worse
- FactSaudi Arabia launches Operation Decisive Storm in Yemen
- weakensDriverHumanitarian Access
- strengthensIndicatorPeople Internally Displaced by Conflict and Violence (IDMC)
impact weight 0.65 · Effect from 26 March 2015 · verified
A completed air-and-blockade campaign reduced safe humanitarian access in Yemen.
Strengthens · Relationship strength 0.33 (weight 0.65 × strength 0.5)
Observed
69M people (stock, end-of-year) · 28M above the normal line (2025)
Worse than normal3 readings, 2023–2025: rose from 68M people (stock, end-of-year) to 69M people (stock, end-of-year).
Above normal = worse
Evidence
The sources behind this fact and its verification state.
- 1.Al Jazeera — Saudi and Arab allies bomb Houthi positions in Yemen, 26 March 2015Saudi Press Agency · High credibility · verified
- 2.Reuters — Saudi-led coalition bombs YemenReuters · High credibility · verified
What the sources establish
Saudi Press Agency carries the official instrument or communique. Reuters records the same dated act independently.
Established: a 26 March 2015 start of Decisive Storm with MBS as defence minister, independently reported.
Not established: a unique later famine coefficient from that night, or that every later Houthi strike on Saudi cities was this order.
The king authorised. Coalition partners flew.. A later repeal, court stay, or successor order would be a different Fact with a different date. That pair identifies Saudi Arabia launches Operation Decisive Storm in Yemen, not a later speech about Saudi Arabia launches Operation Decisive Storm in Yemen.
Co-authors and later implementers named in Context remain on the file. If a later repeal, stay, or successor decree exists, it needs its own date and its own row. The contribution described on this Person row is limited to He was defence minister and politically owned the campaign. The king authorised. Coalition partners flew. That limit is the alternative to treating office-holding as authorship of every later series. The King, cabinet, PIF, Aramco, and foreign counterparties share specific files. Allegation is not a completed judgment. An intelligence assessment is not a criminal conviction.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorMohammed bin Salman Al Saud
- contributed toFactSaudi Arabia launches Operation Decisive Storm in Yemen
- weakensDrivers (3)Yemen Houthi war / Red Sea shipping crisis
- strengthensIndicatorGlobal deaths from organized violence (UCDP)
Articles explaining this fact
Analysis explicitly linked to this fact.
Cite this page
Factrail. (2026). Saudi Arabia launches Operation Decisive Storm in Yemen. Factrail. https://factrail.ai/facts/sa-yemen-intervention-2015
https://factrail.ai/facts/sa-yemen-intervention-2015
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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