BEIRUT - Turkey-backed Syrian rebels said on Saturday they had cut a road connecting Syrian towns along a section of the border where the Turkish army is waging an offensive targeting Kurdish-led forces.Officials with the Kurdish-led Syrian Democratic Forces (SDF) could not immediately be reached for comment.Youssef Hammoud, spokesman for the Turkey-backed National Army, said fighters had cut the 712 road that links Tel Abyad and Ras al Ain - the focal points of the Turkish offensive that began on Wednesday.The road hugs the border in some places and in others extends a number of kilometers (miles) into Syria."This advance was on a new and surprise front ... between Tel Abyad and Ras al Ain. On this front, they were able to cut the roads linking together Suluk, Tel Abyad, Ras al-Ain with the villages in the area," he said in a statement to Reuters.He said 18 villages had been captured in the advance.