[1/2] Ukrainian servicemen put out burning grass near their positions, amid Russia's attack on Ukraine, near a front line, in Zaporizhzhia region, Ukraine August 31, 2023. REUTERS/Oleksandr Ratushniak Acquire Licensing Rights Summary Ukraine counteroffensive launched three months ago Troops fighting through heavy minefields NATO chief says 'need to trust' Ukrainian commanders Ukraine has stepped up drone attacks on Russia KYIV, Aug 31 (Reuters) - Ukraine told critics of the pace of its three-month-old counteroffensive to "shut up" on Thursday, the sharpest signal yet of Kyiv's frustration at leaks from Western officials that say its forces are advancing too slowly. Nearly...