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This is the Global News podcast from the BBC World Service.

I'm Alex Ritson, and in the early hours of Wednesday, the 11th of February, these are our main stories.

As Iran marks the anniversary of its Islamic revolution,

we're on the ground in Tehran for the first time since the regime's brutal crackdown on anti-government protesters.

A rare mass shooting in Western Canada has left several people dead and more than two dozen injured.

Cuba says it can't supply airlines with aviation fuel as a result of de facto

American embargoes.

We assess the impact on local tourism.

Also in this podcast, scientists believe you can train your brain to reduce the risk of getting

dementia.

Looking at a computer screen, seeing two objects in the center that you have to make a decision about,

and then around the outside of the screen, you start to get distractors.

And some of international cinema's biggest stars are in Berlin for the annual film festival.

In Iran, 10 days of events marking the anniversary of the 1979 Islamic Revolution come to an end today

with the authorities organising a major rally in the capital Tehran.

For the first time since massive anti-government protests shook Iran and the brutal crackdown left thousands dead, we have a report from inside the country. The BBC has gained access at a time when President Trump's renewed his threat of military action against the Islamic regime if nuclear talks fail.

And Israel's leader is expected in the White House later today to discuss his own strategic games regarding Iran.

Our correspondent Lys Doucette sent this report from Tehran on the condition that none of the material is used on the BBC's Persian service.

These restrictions apply to all international media organisations operating in Iran.

The traffic is brisk, as you can hear.

Many people going about their day.

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