Maybe he's a bit too forceful! Are we in a period of megaphone diplomacy right now? Unless, a final straw's just broken somewhere, this isn't the way to get an ally on board to a change of policy - unless the Israeli government isn't really listening. The next stage I would imagine, would be the reduction of the Israeli defence subsidy or threats to do so. This would wreck havoc with the Israeli economy...
Russia calls for international cooperation to fight ISIS (Reuters)
from the article: Indyk: If Israel manages alone, it can decide alone