And now, they're executing a prepared plan to sow chaos, in the hope that they can make things uncomfortable enough for the attackers and their allies, that they can negotiate an end (for now) to hostilities. From the article:

Part of the regime’s approach has been to decentralise military decision-making to prevent its forces from being incapacitated by assassinations of top commanders, with Iranian foreign minister Abbas Araghchi suggesting Tehran’s forces were acting independently. “Our military units are now, in fact, independent and somewhat isolated, and they are acting based on general instructions given to them in advance,” he told Al Jazeera television network on Sunday.