An intercontinental ballistic missile launched late last week by North Korea appears to have disintegrated before splashing down in the Sea of Japan, indicating Pyongyang may not yet have acquired re-entry technology vital for an operational nuclear-tipped ICBM, a missile expert said Monday.Citing video images captured by Japanese public broadcaster NHK, Michael Elleman, a senior fellow for missile defense at the International Institute for Strategic Studies, concluded that the missile's "re-entry vehicle did not survive" during the second ICBM test by the country."If this assessment accura…READ FULL ARTICLE