::::: There are no proper grounds for a WP editor to hold hostage relevant validly sourced info because he/she doesn't like it.  It's the WP approved nature of WP editoring to add only info from valid sources.  It's up to anyone objecting to provide his/her own valid sources to rebut.  If there really was any question about the validity of sources, that would be something to discuss.  Since major news sources are reporting it, it's pretty much fair game. (I had posted above the link above from the Telegraph, a major UK media outlet.) 
 ::::: Also, the fellow editor mentioned WP:RS after which I quoted an applicable section from it.  Immediately below that, the editor quoted it verbatim a second time.  What's the point of that?  
 ::::: Also it's still baffling IMO what is objectionable or controversial about this material.  VY 'been hangin' w/ VP a lot lately.  As I understand it, it was kind of the original cause of him getting into sh** w/ his UA "constituents" a few months ago.  (Causa causae est causa causati.)  So what's the big deal if he stopped by VP's place again? Especially when the folks in Kiev are no fun anymore?