(VOVworld)-With the famous statement: "For Vietnam, Cuba is willing to devote all our blood", Cuba's revolutionary legend Fidel Castro has become a symbol of the comradeship and brotherhood between Vietnam and Cuba. He was the only foreign head of state to visit the liberated zone in Quang Tri province during the American war. The visit was made in September 1973 at his own proposal

Fidel Castro waved the victory flag of the Khe Sanh Brigade (Photo: VNA)

Prime Minister Fidel Castro and Prime Minister Pham Van Dong addressed a meeting in Quang Tri province to welcome the Cuban delegation (Photo: VNA)

Prime Minister Fidel Castro and Prime Minister Pham Van Dong in Quang Tri province in September, 1973. (Photo: VNA)

Fidel Castro visited the Khe Sanh Brigade (Photo: VNA)

Fidel Castro and heroine Ta Thi Kieu of the Vietnam liberation army (Photo: VNA)

Prime Minister Fidel Castro and Prime Minister Pham Van Dong  with liberation forces in Quang Tri province (Photo: VNA)

Fidel Castro visited Dong Ha town in Quang Tri province, which was in post-war recovery (Photo: VNA)

Fidel Castro visited the Tan Lam and Doc Mieu bases along the McNamara line (Photo: VNA)