 The Russian commander revealed the main problems on the Ukrainian front. Russian troops are exhausted after suffering significant losses. Following their major attack on the key Ukrainian town of Avdivka, a US war think tank has said. Russian and Ukrainian forces fought fierce battles around the strategically important eastern town for a third day after Moscow launched one of its biggest military offensives in months. The Institute for the Study of War ISW reported that Vladimir Putin's troops are subsequently exhausted according to Russian Vostok battalion commander Alexander Kodakovsky who is now even advocating for Russian forces to freeze the frontline in Ukraine in order to make replacements. Kodakovsky said that the Russian infantry forces on the frontline in Ukraine face problems of counter-battery capabilities, commander competence, medical supply, rotation and supply. Kodakovsky claims that the lack of communication between Russian battalions and the headquarters was so widespread that when the Ukrainian troops attacked the building of the Russian headquarters the Russian battalion did not understand that the headquarters was out of order and continued to conduct operations independently, the information says. It should be noted that Kodakovsky previously complained about problems affecting the ability of Russian troops to conduct effective combat operations. Kodakovsky is a former commander of the Alpha Special Unit of the Security Service of Ukraine. But after Russia attacked the Donbas region in 2014 he defected and became the security minister of the Donetsk People's Republic. He left that post in 2014 and has been commanding troops in the Donbas region ever since. Earlier Kodakovsky suggested that the only way Russia could win the war is by using nuclear weapons against Ukraine. The ISW added that in the face of relentless attacks Ukrainian forces have managed to destroy at least 36 Russian armored vehicles including tanks according to a Ukrainian reserve officer. Avdivka is described as a gateway to the city of Donetsk, the capital of the Donbas region and has become a symbol of resistance since Russia's invasion.