An intercepted phone call released Tuesday by Ukraine’s intelligence agency stated that majority of Russian troops are refusing to take part in direct combat with Ukrainian soldiers.

Only one in 10 Russian soldiers is willing to fight Vladimir Putin‘s war against Ukraine, the Security Service of Ukraine (SBU) has alleged.

“Russian invaders are so afraid of the [Ukraine] armed forces that only 1 in 10 is ready for a direct confrontation with Ukrainian soldiers,” the SBU wrote on its Telegram channel. “This is evidenced by a new telephone conversation between the occupiers, which was intercepted by the SBU.”

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The revelation was made when the SBU intercepted a conversation between a member of the Russian military and his wife.

“Someone gave up on us, damn it. Thirty people from the whole battalion went into battle,” the SBU quoted a Russian soldier as telling his wife. “…only thirty people from the whole battalion. Thirty! Can you imagine?”

 Ukraine’s intelligence agency reportedly said that between 300 to 900 servicemen are part of each battalion. However, the number mostly depends on the type of troops.

“This explains why the Russian occupiers are trying not to attack directly, but are attacking Ukrainian settlements from afar,” the SBU wrote.

The SBU has previously intercepted phone conversations. One of the calls showed Russian troops attempting to arrange fake marriages in an effort to escape Putin’s war in Ukraine.

“The Russian occupiers are trying to make sham marriages to escape the war,” Ukraine’s intelligence agency wrote on Facebook on June 7. “This is evidenced by telephone conversations of Russian invaders, which were intercepted by the SBU.”

A Russian soldier described during the phone call how he asked his friend to “go to the registry office and file a marriage proposal,” in order to avoid the fight in Ukraine.

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“Due to the significant number of defectors in the army of racists, control was significantly strengthened. So now they can return home only in three cases: injury, death of the occupier or a close relative,” Ukraine’s intelligence agency added. “The option with a fictitious marriage, no matter how original it was, did not work for the soldiers.”

However, the claims made by SBU cannot be independently verified.