A drop in international flights spurred by the war in the Middle East has left Qantas’ suppliers “nervous” they are buying too much aviation fuel at high prices, the airline’s chief executive said. The Iran war has chopped roughly 20 per cent of international flight capacity into Australia, dramatically altering the market for jet fuel as airlines scramble to secure supplies, CEO Vanessa Hudson said. “Our suppliers are a little bit nervous that they purchase supply that is in excess of what the market needs at really high fuel prices,” she said. Nevertheless, the suppliers are expressing increasing “confidence” about their ability to keep airlines fuelled up through the crisis, she said. Vanessa Hudson on stage at the Macquarie Conference in Sydney on Tuesday.  Supplied Hudson said the situation is helped both by airlines’ close coordination with suppliers and recent efforts by the government to secure fuel from trade partners . Qantas counts Ampol, Viva Energy, BP, and ExxonMobil among its suppliers.…