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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.

Teasing or humiliating a bride or groom to be is a common practice the world over.

But in parts of China, things can get a little out of hand.

We look into a tradition that Chinese authorities are trying to snuff out in the name of decorum.

And where were you on the night of May 20th?

Sometimes keeping out of serious trouble means having a good alibi. But new research shows just how inaccurate people are in remembering where they were and when.

First up though.

This week at least 10 people were killed in an attack in Afghanistan after armed men open fire on workers clearing land mines.

The government blamed the Taliban, which has denied responsibility.

Violence has been increasing in the country since America announced it would withdraw its troops.

This isn't the first time a world power has left Afghanistan's government forces on their own.

At the outskirts of Kabul, the last Soviet tank crews prepared to pull out. They're handing these positions over to the Afghan army.

For them, the last exit to Kabul beckons.

In 1989, Soviet troops pulled out after a decade of fighting against Islamist guerrillas, the Mujahideen.

Then as now, the mood was not hopeful for peace.

These soldiers are all volunteers. In two weeks time, they'll be Kabul's main defenses.

This time around, the story was supposed to be very different.

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