Gulf of Oman / Riyadh / Washington — A political earthquake is shaking world capitals after intelligence leaks claimed Saudi Arabia and Iran jointly backed a strike on the US aircraft carrier USS Abraham Lincoln, raising urgent questions over whether Crown Prince Mohammed bin Salman (MBS) has broken with Donald Trump in spectacular fashion.

According to classified assessments cited by Western officials in this fictional scenario, the barrage of drones and anti‑ship missiles that recently targeted the Lincoln’s strike group may have been coordinated through a secret “de‑escalation channel” between Riyadh and Tehran — the same track once advertised as a peace bridge, now allegedly repurposed as a war conduit.

US radar logs show launch signatures from Iranian territory, but intercepted chatter, officials say, hints at Saudi intelligence “looking the other way” on staging areas and flight paths. Publicly, Riyadh condemns the attack and reaffirms its “strategic partnership” with Washington; privately, American diplomats report icy meetings and sudden delays on arms and basing deals long championed by Trump.

In Washington, Trump‑aligned figures are furious. Some accuse MBS of “playing both sides,” cashing in on US security while flirting with Iran to hedge against future sanctions or leadership changes in the White House. On Saudi social media, nationalist influencers argue the kingdom must “stop writing blank cheques for foreign wars” and quietly welcome any show of independence from Trump’s orbit.

Whether or not the “Saudi–Iran strike axis” is fully real, the perception alone is explosive: if America’s closest Arab partner is seen to tolerate — or even quietly assist — a blow at a US carrier, the entire architecture of US power in the Gulf starts to look far less solid than Washington has always claimed.