Original sentence: In addition, North Vietnam had no intention of honoring the peace agreement, and fighting continued without the United States until the fall of Saigon in 1975.Le, however, refused to accept the prize, on the grounds that his country was not yet at peace
Edited sentence: Le, however, refused to accept the prize, on the grounds that his country was not yet at peace; and fighting continued without the United States until the fall of Saigon in 1975