Silambam Weapons - Short Combat Knife ( Katti )
( Sanskrit संस्कृतम् : not_available / Tamil தமிழ் : கத்தி )
Katti sandai ( Knife fighting ) is close combat fight and most vulnerable attacks if one knows this art.
If opponent have knife on hand, he whom defence should gain his advantage by getting himself a knife.
In psychology warfare, for defensive purpose - knife vs knife is better than, knife vs empty hand.