Max Pearson

But Prime Minister Margaret Thatcher is not for turning.

The rapid reunification plan looks like it will fall at the final hurdle.

But as the clock ticks down, Helmut Kohl decides it's time to use his trump card, the President of the United States.

Why do you think she was willing to do it for George Bush?

Later that day, a treaty restoring Germany's full sovereignty is signed by both German states and the four Allied powers, paving the way for a united Germany.

Good morning from Berlin on the day the last scar of the Second World War was healed.

Just 328 days after the fall of the Berlin Wall, present day Germany was formed, with Berlin eventually restored as its capital city.

Joachim Bitterlich, who served as a key advisor to Helmut Kohl until 1998.

He was speaking to Jacqueline Payne.

The fall of the Wall was such a pivotal moment, and you can find many first-hand stories from either side of the Iron Curtain Division of Europe on our website.

Go to bbc.com slash witnesshistory.

Still to come, a chef who redefined the way we read about food, and the man who wanted to know more about the Great Wall of China.

And I began to think, I bet no one has ever walked along the whole thing before.

If I could do that, and document what I see, that would be a really meaningful contribution to our nation's history.

Before that, a story of desperate struggle in the face of the effects of climate change.

Megan Jones has been hearing how one Maasai community in Kenya overcame a devastating drought that killed almost all of their livestock.

It was typically 100% a Maasai-dominated area.

The predominant economic activity, source of livelihood, was pastoralism.

So we grew up just being rural children, enjoying the Maasai life, raised up in a strong Maasai culture.

The Maasai are pastoralists, which means they depend on their cattle for both their food and livelihood.