Hello and welcome to the Intelligence on Economist Radio. I'm your host, Jason Palmer.

Every weekday we provide a fresh perspective on the events shaping your world.

Columbia has been on a historic path to peace since a 2016 deal struck with the armed rebel group, the FARC.

The government has been trying to crimp the production of cocaine that once helps sustain the FARC.

But a visit to a rural farm shows that a shift to legal crops is turning out trickier than expected.

There's much talk of the struggle of young LGBT people, but at the other end of life things are still tough.

LGBT pensioners often live alone, have no kids, and worry about disclosing their sexuality to carers.

Luckily, retirement homes that cater to them are popping up.

But first...

Turkey's president, Recep Tayyip Erdogan, finds himself under increasing pressure, and he seems to be making his situation worse.

Over the weekend, he sacked the governor of the central bank, sending the Turkish lira plummeting.

This week, his administration ordered the arrest of hundreds of soldiers allegedly connected to a 2016 coup attempt.

And he's pressed ahead with plans to drill for oil near the divided island of Cyprus, a move that drew a rebuke from America's State Department yesterday.

But a bigger worry has been years in the making.

This week, Turkey will receive a Russian missile defense system.

The responsibility for this issue of the S-400 belongs entirely to our national defense ministry and the Turkish General Staff.

May the S-400 be beneficial for our country, our region, and especially our world.

That puts NATO at odds with its key member in the region and risks a raft of damaging economic sanctions.

Turkey is taking delivery of the first S-400 surface to air missiles, a Russian system, crucially, rather than buying an American system, the answer to America's Patriot platform.

Daniel Franklin is our diplomatic editor.

It's controversial because Turkey is a NATO member, normally NATO members, by NATO equipment interoperability is key.

And there's a particular concern that this system will gather data that will be very useful to the Russians and undermine the effectiveness of NATO equipment, particularly the F-35 fighter jets and the concern is that the system will allow Russia to undermine the stealthiness of NATO's fighter jets.

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