Hello and welcome to the intelligence from The Economist. I'm your host, Jason Palmer.

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

Saudi Arabia is aiming to wean its economy off the oil that made it spectacularly wealthy,

and a renewed tourist push is part of that effort.

We ask how likely the plan is to bring visitors or to drive investment.

And Europeans love the flavor of black currents, a healthy berry that doesn't tend to grow in great numbers.

But surprising new research suggests that the kind of probiotics found in yogurt

could help boost the berries yields.

First up, though. Cuba reopened to international tourism this week, and visitors will have noticed a few white sheets floating in the windows of homes.

White is the color of a protest movement that had planned national demonstrations yesterday,

the so-called civic march for change.

But a few sheets were some of the only protest symbols on show.

Cuba's communist government did its best to ensure no one took to the streets,

emptying prisons to make room for detainees

and harassing those who wore white t-shirts.

So the protests happened elsewhere, in Miami, Florida.

In Rome.

In Berlin.

In Mexico City, and Santiago, Chile.

The government, which claims the protests are a U.S.-backed attempt to overthrow it,

seems to be fighting a rising tide.

The country's people are agitating for reform,

...