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...
U.S. asks Uzbekistan to join anti-ISIS coalition (Reuters)
from the article: Indyk: If Israel manages alone, it can decide alone