Jeane Duane Kirkpatrick (1926-2006) served our country in many capacities before becoming the first woman to serve as the U.S. Ambassador to the United Nations.
If we were ever fortunate to have the likes of a Margaret Thatcher serve in our government, it would have been Jeane Kirkpatrick. To stay with the British meme, her prescience had to rival that of Winston Churchill who was the only man on the planet warning of the coming threat of Nazi Germany in 1934.
A quote from the Introduction to Kirkpatrick's book: Making War To Keep Peace, published in 2007, a year after her death, provided an example of her prescience and served as a warning of the coming of a threat such as ISIS.
Here's the quote:
We have had ample opportunity in this century of wars and revolutions to observe what happens when violent elites, who espouse coercive ideologies, gain access to the resources of states. They start with murder and denial of freedom in their own states, and move on to war, which may spill over to their neighbors and sometimes to genocide.