(LEAD) Obama: U.S. holding first consultations with S. Korea about more missile defense capabilities
(ATTN: REWRITES throughout, ADDS background; CHANGES slug, headline) By Chang Jae-soon WASHINGTON, Feb. 8 (Yonhap) -- U.S. President Barack Obama said the U.S. is consulting "for the first time" with South Korea about more missile defense capabilitie