In blatant violation of international law, warplanes of the US-led allianceandthat feeds Aleppo city, causing a blackout in the city.A military source told SANA that warplanes of the Washington alliance violated Syrian airspace and attacked civilian infrastructure in Mare'a, Tal Sha'er, and al-Bab in Aleppo countryside on Sunday.The source added that the warplanes attacked, which resulted in cutting off power from most neighborhoods in Aleppo city.This transgression comes only 8 days after two F-16 warplanes belonging to the alliance targeted two power plants in al-Radwaniye area east of Aleppo city, cutting off power from the area.