“I have now read four other published sources concerning this recording. The recording only refers to “Alexander”. The Ukrainian government says it “Alexander” is Russian since the call originated, according to them, from a Russian area code “7”. They then take another leap and say, really speculate, that this is the voice of Alexander Borodai.”
You are making a false statement. It was Ukrainska Pravda who reported the telephone number belongs to Alexander Borodai, and not the government of the Ukraine:
Ukrainska Pravda reported that the number belonged to a pro-Kremlin publicist Alexander Borodai, and cited unidentified sources as saying that the man had been entrusted with the “Crimea question” and now is handling the “Donetsk question” in eastern Ukraine. In February, Borodai published a YouTube video, titled: “How to Divide Ukraine.”
It is Pravda.ru in a year 2002 news report which described how Alexander Borodai was in 2002 the Deputy Directorr of the FSB responsible for exactly the kind of covert military operations he is now being linked to directing in the Ukraine in the intercepted telephone call we are listening to in the video.
The disinformation suggesting nothing adverse about the Russian invason of the Ukraine and this intercepted telephone call can be believed because the Russians deny it is simply unbelievable. You heard Alexander Borodai directing the covert Russian military operations in the Ukraine which targeted and killed the Ukrainian defense forces. You can deny and deny and deny till you are blue in the face, but the evidence is stacking up against the Russian war propaganda and propagandists.
By your own admission, the sources connecting Alexander Borodai to the recording are "unidentified".
I have no leanings one way or the other on this question. I just cannot see any credibility to these assertions. They may well be correct, but the case has not been made.