The Pentagon believes North Korea could field as soon as 2020 a mobile long-range, nuclear-armed missile capable of hitting targets anywhere in the United States including Washington and New York, a senior military official said in what appears to be the first public assessment linking a date to the projected operational capability of a North Korean road-mobile, intercontinental ballistic missile. Missile Defense Agency Director Vice Adm. James Syring told the Senate Appropriations defense subcommittee April 13 that the U.S. government...