This Heart and Soul is the first of a two-part series looking at Jewish-Muslim relations in different parts of the world, starting with aios, two families with two religions brought together in the shadow of two different wars.

The relation between Senor Cabinio and me Pope was something incredible.

They were like two friends, two brothers.

From the Second World War, where the Hardiga family hid their Jewish neighbors,

the Cabellios, just meters from the Gestapo.

Do not leave the house, not speak to anyone.

The Gestapo officers were exactly across from my bedroom window.

To the siege of Sarajevo 50 years later,

when the Jewish community helped rescue the Hardegas.

Jewish community gave offer to my mother-in-law.

If we want all of us to move from Sarajevo, they can help us to go out.

In a city which still prides itself on the good relations between its Muslim and Jewish communities.

Every life matters.

Let us make commitment that we will protect each other

like we did in this long history of Jewish-Muslim relations.

I'm Alex Strangway's booth,

and I'll be travelling to Sarajevo to hear the story of neighbouring families

and how their friendship helped each other survive war,

not once but twice.

In Sarajevo, history is everywhere, from the 500-year-old mosques, synagogue buildings and ancient churches,

to the bullet-pocked apartment blocks and red paint on the ground,

showing where people were killed by grenades during the siege of Sarajevo in the early 1990s.

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