Secretary of State Warren Christopher has formally recommended that President Clintonestablish full diplomatic ties with Vietnam. Clinton is expected to make a decision in time for Christopher's July trip to meet with the Association of South East Asian Nations in Brunei. If he receives the go-ahead, Christopher will make a diplomatic stop in Hanoi. Although many business leaders support full relations with Vietnam,relatives of soldiers missing in Vietnam oppose the moveas long as the MIA issue remains unresolved. Sen. John McCain (R-Ariz.), aformer Vietnam War POWwho has long supported normalizing relations, says he will offer a Senate resolution supporting the move with Sen. Bob Kerrey (D-Neb.), who lost a leg in Vietnam. The support of two such distinguished senators and war heroes, saysTIME Diplomatic correspondent Dean Fischer, makes the move much more likely.