Is there ? <a href=" http://www.horsdoeuvres.fr/contact/ ">chosen glucophage 250 mg captive shudder</a> In the end, a superpower&rsquo;s most valuable possession is credibility. If the world&rsquo;s pre-eminent nation makes a threat, offers a guarantee &ndash; or draws a &ldquo;red line&rdquo; &ndash; it must be prepared to enforce its will. Otherwise, this priceless asset will be tarnished, perhaps indelibly.