YES = if multiple reliable sources confirm that the Wagner group has ceased its operations in Ukraine entirely. Temporary halts to recuperate will not count.

The current consensus seems to be that Wagner Group are 

not involved in combat operations in Ukraine

Based on the earlier survey, I will wait for a month after market close to resolve this. But as it stands (which could change), the market will very likely resolve YES. However, if Wagner Group resumes operations in Ukraine 

, then this market will resolve NO (as the halt in operation would be deemed temporary).