Cronkite's reporting of Vietnam was controversial. He reported the events on the evening news. But at the Tet Offensive he traveled there to see the results. What he saw upset him. On February 27, 1968, Cronkite reported the war in Vietnam could not be won. This was a major change from his usual objective reporting. He was voicing his own opinion on national television. It was the view of David Halberstam and others that Cronkite's broadcast turned many Americans against the war. Also that it played a part in Lyndon B. Johnson's decision not to run for another term as President. The other viewpoint is that Americans had already turned against the war before Cronkite's broadcast. After watching Cronkite's broadcast, Lyndon Johnson said to his press secretary, George Christian, "If I have lost Walter Cronkite, I’ve lost Middle America." Whatever effect Cronkite's broadcast had, by 1967 Johnson's approval rating on the war was down to 32%.