Well, rules in anarchy have to come from consensus of the people. So the only rules, in practice, are those that the people are willing and able to enforce against those who wish to break them.
History shows that, in anarchy situations, those who wish to break the rules are sometimes highly motivated and well armed. Thus anarchy at least means "no rules that apply to a warlord when he really wants them not to".
Now, one could argue that that is essentially the situation with the US government now. But the well-armed warlords tend to show considerably less restraint than the US government does.
There is no such thing consensus of the people in any communities of nontrivial size.
In anarchy situations, whoever is capable of filling the power vacuum creates new rules - the "highly motivated and well armed" groups don't break the rules (since if they disagree, there's obviously not a consensus about those rules); they define the rules and others possibly break them.
History shows that, in anarchy situations, those who wish to break the rules are sometimes highly motivated and well armed. Thus anarchy at least means "no rules that apply to a warlord when he really wants them not to".
Now, one could argue that that is essentially the situation with the US government now. But the well-armed warlords tend to show considerably less restraint than the US government does.