Russia on Wednesday defended its supply of military equipment to Syria, saying it complies with international law. In a statement, Maria Zakharova, Foreign Ministry spokeswoman said Russia had long been supplying weapons and military equipment to Syria, which was done under the existing bilateral contracts and in full conformity with international law. She added that there were Russian military specialists in Syria instructing local troops in using the supplied armaments. Earlier in the day, Deputy Foreign Minister, Sergei Ryabkov claimed that Russia would continue sending humanitarian aid to Syria using alternative flight routes. He made the remarks in response to the recent move of the Greek government, which closed its air space for Russian humanitarian cargo flights heading for Syria, obviously under U.S. pressure. Bulgaria on Tuesday also refused Russian flights to enter its air space on suspicion that the planes might carry military other than humanitarian cargoes.