The Saudi-led coalition intercepted three ballistic missiles aimed at the kingdom's Eastern Province and four drones targeting southern regions on Tuesday, with no reported casualties. Coalition spokesman Major-General Turki al-Maliki confirmed the interceptions, which followed the destruction of three additional drones over Riyadh and the south the previous evening. Saudi Civil Defence issued and then lifted emergency alerts in the Eastern Province and Al Kharj governorate. The attacks arrived during a diplomatically loaded moment. Saudi Defence Minister Prince Khalid bin Salman Al Saud, Pakistani Army Chief Field Marshal Asim Munir, and Turkish intelligence chief Ibrahim Kalin were meeting Iranian counterparts — including President Masoud Pezeshkian, Foreign Minister Abbas Araghchi, and Supreme National Security Council secretary Mohsen Rezaei — in Tehran. A joint statement pledged to "continue the dialogue to strengthen cooperation amongst the four regional countries, including for peace and security in the region." The wider context is a regional war that has metastasized. The US-Israel war on Iran, launched in February, reignited the Yemen conflict. The Houthis seized strategic Red Sea coastal areas from Saudi-backed government forces in a lightning offensive last month, prompting a Saudi counteroffensive with intensified airstrikes. The coalition said it destroyed five Houthi tunnels used for ballistic missile storage, four missile launchers, and a missile depot in retaliatory strikes. Houthi strikes have escalated in lethality and reach. An attack on King Khalid International Airport in Riyadh this month killed at least 13 people and wounded more than 300 — the deadliest strike on Saudi soil in over a decade. Earlier Monday, Houthis claimed attacks on the Riyadh airport and crude oil pumping stations in the kingdom's west and east. The coalition said those missiles were intercepted. The diplomacy track and the military track are running on separate clocks. Pakistan and Qatar led earlier mediation between the US and Iran that produced an interim peace agreement in June, but fighting resumed shortly after. The Tehran summit represents a second attempt, this time with Saudi Arabia's direct participation and a wider coalition of mediators. But the structural problem remains: the Houthis have independent operational capability, and no ceasefire framework yet addresses their role. The conflict's economic damage is spreading well beyond the combatants. Shipping through the Strait of Hormuz is restricted, driving up global oil and petrol prices. Egypt's Parliament authorized military deployment to help defend Saudi Arabia on Monday, expanding the war's footprint. The humanitarian crisis in Yemen — already the world's worst before this escalation — is deepening. The core tension is irreducible: Saudi Arabia is simultaneously fighting the Houthis, negotiating with their patron Iran, and trying to prevent the conflict from consuming the broader Gulf economy. Each day the military escalation continues, the diplomatic channel becomes harder to sustain.