If a tool breaks in your hand while using it ...

I found this passage from Isaiah 10 interesting.

Doom to Assyria, weapon of my anger.
My wrath is a cudgel in his hands!
I send him against a godless nation,
against the people I'm angry with.
I command him to strip them clean, rob them blind,
and then push their faces in the mud and leave them.
But Assyria has another agenda;
he has something else in mind.
He's out to destroy utterly,
to stamp out as many nations as he can.
Assyria says, 'Aren't my commanders all kings?
Can't they do whatever they like?
Didn't I destroy Calno as well as Carchemish?
Hamath as well as Arpad? Level Samaria as I did Damascus?
I've eliminated kingdoms full of gods
far more impressive than anything in Jerusalem and Samaria.
So what's to keep me from destroying Jerusalem
in the same way I destroyed Samaria and all her god-idols?'"

When the Master has finished dealing with Mount Zion and Jerusalem, he'll say, "Now it's Assyria's turn. I'll punish the bragging arrogance of the king of Assyria, his high and mighty posturing,