At least 16 people have been killed since violent clashes began several days ago between pro-Iranian fighters and the Kurdish-led, US-backed Syrian Democratic Forces (SDF) in eastern Syria, the Syrian Observatory for Human Rights said on Sunday. There are seven children among those killed, the British-based war monitor added. At least 35 civilians and seven militiamen have been injured, it said. Clashes began in Deir al-Zour province on Wednesday. The region has been witnessing shelling and clashes, prompting civilians to flee the area. Earlier in the week, the observatory said the violent cla…