WRAPUP 1-Trump sanctions fail to slow Turkey assault; Syrian troops move on Manbij

Turkey ignored U.S. sanctions and pressed on with its assault on northern Syria on Tuesday, while the Russia-backed Syrian army roared into one of the most hotly contested cities abandoned by U.S. forces in Donald Trump's retreat.Reuters journalists accompanied Syrian government forces who entered the centre of the city of Manbij, a flashpoint where U.S. troops had previously conducted joint patrols with Turkey.