The Ukrainian military leadership described the situation along the battle front in the east and south as difficult late on Saturday, with Ukraine’s army repelling 87 attempted attacks by Russian forces in the course of the day, the general staff said in a situation report. Fighting is particularly heavy on two sections of the front near the city of Donetsk, which has been controlled by Russian forces since 2014. Russian troops launched a good two thirds of their attacks there over the course of the day, the report said. The small town of Avdiivka, directly north of Donetsk, came under renewed…