Although the infrastructure suffered significant problems in Tet gun battles, it sustained the heaviest losses as a direct consequence of yankee counterespionage strategies, former Viet Cong users acknowledge. Tình hu?ng gi? ??nh là t? ch?c ph?n ??ng n??c ngoài liên t?c ch? ??o m?t s? ph?n t? x?u trong n??c, mua chu?c, kích ??ng, lôi kéo ??