If self-proclaimed World Leaders want to meet without media attention, no one has more resources to do so than they. Aboard a battleship moored in Placentia Bay comes to mind. Look it up.
Putin and Trump both play the media with intent and purpose, although Trump, with his Twittering constantly proves that he is really not as expert as Vlad. If you — the drooling audience-member, eager to be first to re-post comments on the comments on the meeting — don't want what they do reported, you can make it happen.
Tell them you're bored. Stop reading the stuff.
But whatever else you do, please stop complaining about the shitstorm you're stirring up by complaining about other people complaining. You hafta go first.