By early 1968, the US had dropped nearly 3 million tons of bombs on Vietnam. After the Tet offensive, President Johnson ordered a stop to the bombing and peace talks began in Paris. Some thought the negotiations would be swift but there was little of the give and take that you would normally expect. Nixon had won the 1968 election by a narrow margin and 500,000 American troops were still in Vietnam at that point. After Tet, fighting had again shifted to the countryside and in the first half of 1969, 200 Americans were killed and 800 wounded every week. Nixon introduced the policy of Vietnamizing the war, that is transferring the ground and air war to the Vietnamese themselves. By April 1970 US Forces in Vietnam had been reduced by more than 100,000, well ahead of schedule. Campus protests however reached a peak in 1970 with 4 students being killed by National Guardsmen at Kent State university in Ohio. National polls showed that a majority of Americans still supported the ...