Russia has lost thousands of troops in its invasion of Ukraine so far and is set to replace them with inexperienced conscripts, according to the Ministry of Defence.
Earlier this week the Kremlin admitted around 10,000 of its armed forces have so far been killed in the war.
The MoD’s latest update agrees in grim reading for tyrant Vladimir Putin who is set to replace his soldiers killed on the frontline with people with little or no experience in warfare.
The MoD said: “Russian forces have almost certainly suffered thousands of casualties during their invasion of Ukraine.
“ Russia is likely now looking to mobilise its reservist and conscript manpower, as well as private military companies and foreign mercenaries, to replace these considerable losses.
“It is unclear how these groups will integrate into the Russian ground forces in Ukraine and the impact this will have on combat effectiveness.”
The update comes a month after Russia launched its brutal and cruel invasion of its neighbour.
Putin's invasion has faced fierce resistance, with Russian officials reportedly recording the deaths of 10,000 Kremlin troops in Ukraine.
The shocking figure was published by a pro-Kremlin newspaper, citing Russian defence ministry officials.
However, the statistic was quickly taken down from the website.
World leaders including Prime Minister Boris Johnson and US Joe Biden are set to take part in an emergency Nato summit today in Brussels to discuss the latest on the invasion.
The PM will use the visit to set out details of a new support package for Ukrainian forces, including 6,000 anti-tank and high explosive missiles.
On Wednesday night Ukrainian president Volodymyr Zelensky called on Nato to provide “effective and unrestricted” support.
He said: "We will see who is a friend, who is a partner and who has sold out and betrayed us.
“Together we should not allow Russia to break anyone in Nato, the EU or G7, to break them and drag them to the side of war.
“We ask that the alliance declare that it will fully assist Ukraine to win this war, clear our territory of the invaders and restore peace in Ukraine.”
He also called for people to take to the streets in demonstrations against the war worldwide.
He added: "Come from your offices, your homes, your schools and universities.
“Come in the name of peace. Come with Ukrainian symbols to support Ukraine, to support freedom, to support life.
"Come to your squares, your streets. Make yourselves visible and heard. Say that people matter. Freedom matters. Peace matters. Ukraine matters."
