That was actually a withdrawal as a part of the negotiations Boris Johnson ultimately sabotaged. He promised unlimited support if they refused any deal by

I had the above post removed for ‘misinformation’: here’s a source:

https://www.pravda.com.ua/eng/news/2022/05/5/7344206/

According Ukrainska Pravda sources close to Zelenskyy, the Prime Minister of the United Kingdom Boris Johnson, who appeared in the capital almost without warning, brought two simple messages.

The first is that Putin is a war criminal, he should be pressured, not negotiated with.

And the second is that even if Ukraine is ready to sign some agreements on guarantees with Putin, they are not.

Johnson’s position was that the collective West, which back in February had suggested Zelenskyy should surrender and flee, now felt that Putin was not really as powerful as they had previously imagined, and that here was a chance to “press him.”

Three days after Johnson left for Britain, Putin went public and said talks with Ukraine “had turned into a dead end”.

Literally 1984 censorship if you’re pretending otherwise

If it was a negotiated withdrawal, Russian troops would not have been killed by Ukraine. Russian troops would have left before being forced to withdraw.

Which is beside the point that their attempt to take Kiev makes your claim that it was defensive a lie.