Other aggressive behaviours include a threat-stare, used to intimidate or start a fight, and a submissive gesture known as pulled-back lips.
So too today, the essential first step in confronting the growing nuclear threat is to stare it full in the face.
"It shows to everybody that the only way to deal with the tobacco industry's claims, sabre rattling and legal threats is to stare them down in court," he said.
Dogs who are worried that they may have to use aggression will usually give the source of the threat a wide, unblinking stare, showing the whites of their eyes.
She's as skilled a talker as Marty, throwing out loaded questions and veiled threats with an unblinking stare.
And I'm going to do everything that I can, Mr Speaker, in this portfolio, to stare these threats down".
He has broad shoulders, a tight midsection, and big, wild eyes that can stare down any threat that life may care to throw at him.
As strong as she was physically, most of the power was in her eyes, small and blue, and when she squinted, she would squint with a murderous intensity that meant, unmistakably, that, if pushed, she would deliver on her stare's implied threat, that to protect what she cared about, she would not stop, that she would run right over you.
A direct stare is a threat in the animal kingdom (and on New York City subways!).
The finance minister, Mathias Cormann, has stared down a threat from Senator Brian Burston that One Nation will "reconsider" savings bills if the government doesn't cut $600m from the ABC in the May budget.
