<p>New York: Deputy Secretary-General of the U.N. was on Wednesday night accused of making ``a very, very grave mistake'' after calling the Bush administration hypocrites who were feeding a right-wing anti-U.N. frenzy in middle America.</p>
<p>Washington's Ambassador to the U.N. responded with undisguised fury to a speech by Mark Malloch Brown, the Deputy Secretary-General, in which he accused Washington of using the international body ``almost by stealth as a diplomatic tool'' while failing to defend it at home.</p>