"After intensive negotiations between National Security Adviser Henry Kissinger and North Vietnamese Foreign Minister Le Duc Tho, the two sides reached an agreement in October 1972, and Kissinger announced, “Peace is at hand.” But the South Vietnamese raised objections, and the agreement quickly broke down. An intensive 11-day bombing campaign of Hanoi and other North Vietnamese cities in late December (the “Christmas bombings”) was followed by more negotiations, and a new agreement was finally reached in January 1973 and signed in Paris.