Ukrainian troops move into Kupjansk after a massive offensive in the Kharkiv region in early September. This city is very strategic because it is the main railway center.

However, the Russian troops had maintained their position on the eastern bank of the Oskil river, which flows through the city. Artillery duels between the parties have continued ever since.

However, on Thursday, Ukrainian tanks and armored vehicles could be seen among destroyed Russian equipment on the east bank, and Ukrainian firefighters and volunteers carrying humanitarian supplies across a pedestrian bridge, according to AFP.

Recently, Ukraine has taken over several territories previously occupied by Russia. In mid-September, the Ukrainian Defense Forces announced that they had captured the Oskil River in the Kharkiv region.

Kremlin announces annexation

– Ukrainian armed forces have crossed the Oskil River. As of yesterday, Ukraine also controlled the West Bank, the Ukrainian defense press office said in a video on Telegram on Sunday.

Video shows a tank crossing a river and meeting soldiers on the other side. The crossing is not stated.

In the last month, Ukrainian forces in the Kharkiv region have advanced to the Oskil River, forcing Russia to establish a new front line further east.

Russia has resisted several attempts by Ukraine to cross the river, so control by both sides would be an important strategic breakthrough, allowing Ukrainian forces to push further east into the Luhansk region, the Ukrainian military said.