BBC News - Stuxnet worm hits Iran nuclear plant staff computers

This is an item - BBC News - Stuxnet worm hits Iran nuclear plant staff computers - about a virus that has infected Iran’s nuclear reactor that is designed to destroy it by attacking the Siemens plant operating software.   It is suggested that the attack is the work of a nation state.
Could this be the start of a new type of warfare, already much heralded but yet to be initiated?
Clausewitz reminds us that the aim of war is to disarm the enemy i.e. to defeat the enemy’s ability to wage war.
Sun Tzu tells us that the supreme act of war is to subdue the enemy without fighting.
What appears to have happened relates to both dictums with dramatic resonance.
But we shouldn’t ditch our conventional weapons quite yet.