Iran has issued a series of escalating warnings to Bulgaria over Sofia's decision to host American aerial refuelling aircraft, marking one of the first times an EU and NATO member state in the Balkans has been directly threatened with consequences over the widening US-Iran conflict. The dispute began on 21 July, when Iranian Foreign Ministry spokesman Esmaeil Baghaei responded to reports that Washington had submitted a diplomatic note requesting approval for the deployment of up to eight Boeing KC-135 tanker aircraft and up to 250 US troops at Bezmer Air Base in south-eastern Bulgaria between 24 July and 1 October. Baghaei said any activity facilitating US attacks on Iran would amount to complicity in what he called "aggression and war crimes", and urged Bulgaria not to become "an accomplice of aggressors and lawbreakers". The warning failed to change the outcome. Bulgaria's National Assembly approved the measure on 22 July by 136 votes to 13, with two ab...