Brazil and UN Try to Solve Nuke Impasse &lt;p&gt;&lt;/p&gt;&lt;p&gt; By Andrei Khalip&lt;/p&gt;&lt;p&gt; RIO DE JANEIRO, Brazil (Reuters) - The United Nations andBrazil moved on Monday to break a months-long deadlock overinspections to verify Latin America's largest nation is notdiverting enriched uranium for weapons.&lt;/p&gt;