The lost art of diplomacy

Whether making derogatory or provocative public statements works in the world of real estate, I don't know.  But I'm pretty sure it's not a good idea in international diplomacy. Take Pakistan, for example: the US may be unhappy with Pakistan's efforts to root out Taliban fighters in the Tribal regions, but a public shaming constrains Pakistan's choices in ways that are unhelpful to US interests.  Threatening to cut off aid in private could be effective leverage. Doing it publicly provokes a domestic backlash and will likely lead to a response for the Pakistani government that is not at all what the US would have wanted or might have achieved had this been negotiated diplomatically (in both senses of the word).