U.S. military buildup in Bulgaria amid Iran tensions: Sofia Airport deployment raises alarms

Recent sightings of US military aircraft at Sofia International Airport in Bulgaria have sparked widespread speculation and concern, particularly in the context of escalating US-Iran tensions.

As of Friday, multiple heavy-lift and refuelling planes – including Boeing KC-135 Stratotankers from Florida’s MacDill Air Force Base, C-17 Globemasters, C-130 Hercules from Germany’s Ramstein base, and even Boeing 747s- have been spotted on the tarmac at Vasil Levski Airport (Sofia’s main civilian hub).

The Bulgarian Ministry of Defence has described the deployment as supporting “NATO’s enhanced vigilance activities,” with U.S. personnel on site for maintenance and training.

Local reactions in Bulgaria have been mixed, with pro-Russian party Vazrazhdane demanding parliamentary hearings on the government’s approval of the deployment without broader consultation.

Social media buzz links the buildup directly to potential US strikes on Iran, with one noting it signals “very hot” developments in US-Iran relations.

This comes amid a broader U.S. military surge in the Middle East, including warships and fighter jets, as President Donald Trump has issued a 10-15 day ultimatum for Iran to negotiate a nuclear deal or face “limited” military action.

Analysts suggest Bulgaria’s NATO membership and strategic location make it a staging point for such operations, though official statements avoid explicit ties to Iran.

Turkey’s reported refusal to host similar U.S. deployments adds a layer of regional complexity. While no direct confirmation exists of a specific request denial in February 2026, Turkish officials have consistently opposed military intervention in Iran since January, prioritizing diplomacy to avoid destabilisation and potential refugee flows.

Foreign Minister Hakan Fidan has reiterated Ankara’s stance against strikes, offering mediation and preparing border reinforcements in case of escalation

The shift to Bulgaria may reflect this reluctance, as Gulf states like Saudi Arabia and the UAE have also signalled unwillingness to facilitate U.S. operations due to fears of Iranian reprisals.

Meanwhile, Iran has issued stark warnings of retaliation against any nation aiding U.S. strikes. In a February 19, 2026, letter to the UN, Tehran stated it would respond “decisively and proportionately” to aggression, targeting “all bases, facilities, and assets” of hostile forces in the region.

Supreme Leader Ali Khamenei has threatened to sink U.S. warships and emphasized Iran’s missile capabilities, while proxies like Hezbollah and Iraqi militias have vowed support, potentially escalating to a “total war.”

Joint naval drills with Russia in the Sea of Oman apparently aim to deter “unilateral action,” amid closures of the Strait of Hormuz during exercises.

These threats heighten risks for U.S. allies, including Bulgaria, which could face indirect fallout despite its peripheral role.

Caption: Photos of U.S. military aircraft on the tarmac of Sofia Airport have sparked intense debate on social media.