This is GPS, the Global Public Square. Welcome to all of you in the United States and around the world. I'm Farid Zakaria.

We'll start today's show in Britain, which seems to have hit the high water mark of Brexit battle.

I'd rather be dead at a ditch.

I'll try to make sense of it all with a terrific panel.

Then, Israel versus Iran.

Remarkable new reporting shows that the shadow war between the two countries is now bursting into the open.

But it get worse is another Middle East war on the horizon.

Alas, the investigative reporter Ronan Bergen.

Also, Jim Mattis had a 44-year career in the Marine Corps and then took the Pentagon's top job as Donald Trump's first Secretary of Defense.

But he quit less than two years later.

General Mattis on duty, honor and loyalty.

But first, he has my take.

Britain's Conservative Party is arguably the most successful political party of the modern age.

The Tories, as they are also known, have ruled Britain for nearly 60 of the 90 years since 1929.

The country's first election with universal adult suffrage.

But this week, we watched the beginning of the end of the Conservative Party, at least as we have known it.

In the post-World War II era, the Tories were defined by an advocacy of free markets and traditional values,

a combination that was brought to its climax in the person of Margaret Tatcher, the Tories' most effective Prime Minister since Winston Churchill.

This free market orientation made sense.

The second half of the 20th century was dominated by one big issue, the clash between communism and capitalism.

Throughout the world, parties aligned themselves on a left-right spectrum that related to that central issue, the role of the state in economics.

In America in the 1950s and 60s, for example, the Democrats included northern progressives and southern segregationists.

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