Iran Issues Sovereignty Warning to Bulgaria Over U.S. Military Transit Operations

Iranian authorities issued a formal protest to Bulgaria regarding U.S. military refueling planes, warning of measures to protect sovereignty as regional tensions rise.

By: AXL Media

Published: Apr 1, 2026, 10:13 AM EDT

Source: Reuters

Diplomatic Protest and Sovereignty Claims

The tension came to light when Stanislav Balabanov, a deputy with the "There is Such People" party, disclosed a formal diplomatic note dated March 18. In the document, Tehran protested the presence of U.S. military refueling tankers stationed at Bulgaria’s Vasil Levski airport. The Iranian government explicitly stated that it "reserves the right to take all necessary measures" to protect its national interests and security in accordance with international law, marking a significant escalation in direct diplomatic pressure on a Balkan state.

Bulgarian Response and Neutrality Stance

In a clarifying statement, Bulgarian Deputy Foreign Minister Marin Raikov confirmed receipt of the Iranian note but maintained that "Bulgaria is not at war." Raikov clarified that while U.S. military planes have utilized Bulgarian facilities since late February, these movements are part of a broader NATO forward deployment rather than direct combat missions. He emphasized that the Bulgarian parliament has not approved any participation in military actions within the Strait of Hormuz, attempting to distance Sofia from the U.S.–led offensive while honoring treaty obligations.

Transformative Analysis: The European Fragmentation

The warning to Bulgaria is symptomatic of a widening rift within Europe regarding military cooperation with the United States. While Bulgaria has allowed NATO forward deployments, other European powers have taken more restrictive stances. Spain has closed its airspace to relevant flights, Italy has denied access to the Sigonella base, and France has blocked overflights for weapons transports. This fragmentation suggests that the U.S. is facing a diminishing "coalition of the willing" in Europe, forcing a greater reliance on eastern NATO members who must then balance their security alliances against direct threats from Tehran.