Although the infrastructure endured serious problems in Tet gun battles, it sustained the heaviest losses being a direct consequence of American counterespionage strategies, previous Viet Cong users admit. “S? xâm ph?m quá m?c c?a các c? quan an ninh ???c bi?t ??n r?ng rãi trong vi?c th?c hi?n các hành ??ng ???c gi?i thích là nh?m b?o v?