Bulgaria has rejected an air corridor to Russia due to formal reasons, for a humanitarian flight to Syria. “We refused to issue a permit to a Russian flight across Bulgaria air space due to the delayed submission of the request. The law says it should be viewed within 5 days. Our Russian colleagues sent the request on October 14 and the flight had been planned for October 16,” said in an interview for TASS spokesperson of the Foreign Ministry Betina Zhoteva.