There was no violation of an embargo, treaty, or international agreement in the case of Russian military transport aircraft that flew over Bulgaria with C 400 rockets onboard to Serbia, Bulgaria's Defense Minister Krasimir Karakachanov said. A flight ban would have sparked a diplomatic scandal with Russia. Military equipment was flown over Bulgaria and returned from Serbia in the same way, Minister Karakachanov said. Bulgaria also flies over third countries, for example when we fly to Afghanistan, and when one has not violated international rules, there is no reason for stopping such flights. Of course, our NATO partners do not like this, but this is the situation, the minister said.