NEW : Fighting erupts in the Syrian city of Homs . U.S. ambassador was among those visiting northern Syria . A human rights official says dozens of peaceful protesters are arrested in Aleppo . The agency said the fact that Jisr al-Shugur and nearby villages were `` empty indicates significant displacement . '' TL;DR NEW
NEW : Fighting erupts in the Syrian city of Homs . U.S. ambassador was among those visiting northern Syria . A human rights official says dozens of peaceful protesters are arrested in Aleppo . TL;DR NEW