WASHINGTON (Reuters) - North Korea, if left unchecked, is on an "inevitable" path to obtaining a nuclear-armed missile capable of striking the United States, Defense Intelligence Agency Director Lieutenant General Vincent Stewart told a Senate hearing on Tuesday. Source: [url=http://feeds.reuters.com/~r/Reuters/worldNews/~3/x7aui3nj2zM/us-usa-northkorea-intelligence-idUSKBN18J24U]North Korea, if left unchecked, on 'inevitable' path to nuclear ICBM: U.S.[/url]