US Tanker Aircraft Depart Bulgaria Following Iranian Warnings

Two U.S. Air Force KC-135 tanker aircraft departed Bulgaria's Bezmer Air Base on August 22, 2026, nearly a month after their temporary deployment sparked criticism and security warnings from Iranian officials.

Bulgaria's parliament authorized the deployment on July 22, allowing up to eight KC-135 aerial refueling planes, support equipment, and 250 U.S. military personnel carrying personal weapons. The mission was scheduled to support operations through October 1.

The temporary positioning of American military assets prompted local protests over concerns of potential retaliation, while Iranian authorities warned that hosting foreign forces constituted complicity in ongoing regional hostilities.

Bulgarian Defense Minister Dimitar Stoyanov confirmed the departure on Saturday and stated that all local operations were conducted in full coordination with Washington.

no information about direct threats to our national security. said Bulgarian Defense Minister Dimitar Stoyanov.

Stoyanov explained that the aircraft operated strictly within allied airspace and that prior planning ensured all government actions remained well-founded.

We are working in full coordination with the U.S. government and had prior information, which is why all our decisions were well-founded, said Stoyanov.

Bulgarian Prime Minister Rumen Radev addressed security concerns on August 24, emphasizing that the deployed tankers conducted flights exclusively over neighboring NATO member countries.

have not made a single flight south, said Bulgarian Prime Minister Rumen Radev.

Radev clarified that flight paths were strictly confined to territories located north and west of the Balkan nation to participate in joint exercises.

The prime minister referenced recent statements by Iranian Foreign Ministry spokesman Esmail Baghaei regarding foreign military facilities.

aggressors for illegal activities. said Iranian Foreign Ministry spokesman Esmail Baghaei.

Baghaei maintained that countries faced no threat of Iranian action provided their military infrastructure was not utilized for unlawful missions.

I think all of this is clear and has been taken into account, said Radev.

The military movements coincided with heightened diplomatic rhetoric from Tehran, where Iranian official Mohsen Rezaei voiced frustration with international monitoring frameworks. Iranian lawmakers are currently considering a proposal to withdraw from the Nuclear Non-Proliferation Treaty, while the Islamic Revolutionary Guard Corps recently conducted controlled detonations in Isfahan.