I can't produce a reliable summary here: the "article text" provided is just the Daily Mail's navigation bar and a list of unrelated headlines (other stories on the site) — the actual body text about the Ukraine military power struggle wasn't captured. Fabricating details about the Zaluzhny/Syrskyi rivalry or the article's argument would risk inaccuracy.

Could you re-fetch or paste the actual article body? If it's not accessible, let me know and I can try searching for coverage of this topic instead.