Answer:
Negore knew he needed to kill Ivan and the Russians and thus avenge his brother's death. Negore wanted desperately to tell Ivan the Terrible that his brother had been mauled by a bear, but he didn't dare speak up. Negore's love for and loyalty to his brother outweighed his fear that people would think him a coward. Negore allowed Ivan the Terrible to beat him so his people could win the war against the Russians.
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