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She wasn't looking for anything that might upset the moment's balance.

We just can't have them here, since that would upset the system and the balance.

But why would such people wish to do anything to upset the balance of world power, I asked myself?

He had to play his hand carefully in order not to upset the fine balance of things as they stood.

A dark force behind the scenes is working to upset the balance.

So we don't want to upset the balance of terror.

"If the technology fell into their hands, it could upset the balance of power."

In both, an X factor had upset the balance of the situation.

"They don't want to do anything to upset the balance they've created."

Of course, rich people in those countries are very careful not to upset the balance.