n "The Better Angels of Our Nature," Pinker presents data showing that human violence, while still very much with us today, has been gradually declining. Moreover, he says, "over the long sweep of history, women have been and will be a pacifying force. Traditional war is a man's game: Tribal women never band together to raid neighboring villages." As mothers, women have evolutionary incentives to maintain peaceful conditions in which to nurture their offspring and ensure that their genes survive into the next generation.

Skeptics immediately reply that women have not made war simply because they have rarely been in power. If they were empowered as leaders, the conditions of an anarchic world would force them to make the same bellicose decisions that men do. Margaret Thatcher, Golda Meir and Indira Gandhi were powerful women; all of them led their countries to war.

But it is also true that these women rose to leadership by playing according to the political rules of "a man's world." It was their success in conforming to male values that enabled their rise to leadership in the first place. In a world in which women held a proportionate share (one-half) of leadership positions, they might behave differently in power.

So we are left with the broader question: Does gender really matter in leadership? In terms of stereotypes, various psychological studies show that men gravitate to the hard power of command, while women are collaborative and intuitively understand the soft power of attraction and persuasion. Americans tend to describe leadership with tough male stereotypes, but recent leadership studies show increased success for what was once considered a "feminine style."

https://www.belfercenter.org/publication/yes-world-would-be-more-peaceful-women-charge