"In the past six years, 15 conflicts have erupted or re-ignited.

The average time a person will be displaced is now nearly 20 years.

The number of refugees returning to their homes is the lowest it has been in three decades.

Africa has more people displaced than ever before."

"During this time, the exceptional cases of the most vulnerable people can be identified for asylum in a third country, and then moved.

That is how the system has worked, and how it should work.

Today, we are seeing it break down - not because the model is flawed, or because refugees are behaving differently, but because the number of conflicts and scale of displacement have grown so large."

Jolie Pitt says: "This tells us something deeply worrying about the peace and security of the world:

It says that for all our other advances, this type of human insecurity is growing faster than our ability to prevent or reverse it.

The international humanitarian system is supposed to work on the basis that refugees will be protected, largely in camps, where they can be given basic food, shelter and education, as a temporary measure until they are able to return to their homes."

Angelina Jolie Pitt is now speaking:

"Thank you very much. I am honored to be here.

Over sixty million people are displaced today, more than at any time in the last 70 years - that is one in every 122 people."

UNHCR representative Angelina Jolie Pitt is about to give her keynote speech.

Syrians Siham and Fathiya have forged a strong bond since meeting in a Turkish refugee camp.  

First and second-generation Vietnamese expats are now returning to Vietnam and helping boost it economically.

Ka Fue Lay is a former Vietnamese refugee. He told Sarah Montague about what it was like being on board a boat leaving Vietnam.

The world is on the move - whether it's in Vietnam, or Mexico ...or the Mediterranean... or Eastern Europe.

How have recent migration flows been charted? Here's a montage of recent speeches and BBC reports on migration. 

A little earlier, the historian Sir Hew Strachan told Start the Week about the largest single influx of people into Britain. About 250,000 Belgians arrived in the UK in late September/early October 1914 during World War One.

"The Belgians integrated very quickly - there was a desire for charitable activity from the British who had a real sense of empathy for the Belgian population," he says.

"There wasn't much of a cultural mark left on this country as they left so quickly."

"People in Britain felt remote from this war - this brought it home."

The scale of the migration crisis over recent years has not been seen since the end of World War Two - but tackling mass migration has been an almost constant concern over the decades.

From WW2 through to Biafra, Uganda, Bosnia and beyond, find out how the world has dealt with past mass refugee movements in this BBC iWonder timeline.

It also reminds us how the UN designated 1959 "World Refugee Year". Watch the news report below to get an idea of the differences and similarities between then and now.

In just a few decades, Miami has been transformed from a sleepy Southern city into an energetic Hispanic metropolis. Much of this has been due to the migration of affluent migrants from Spanish-speaking countries.

So, has Miami avoided completely the controversy around immigration raging elsewhere? Read Luis Fajardo's report here. 

Image source, Getty Images

The charity Save The Children is calling on world leaders to ensure that refugee children do not miss out on education for more than a month. If governments and aid agencies do not deal with the mass movement of people there will be a lost generation with poor prospects, it warns.Today presenter Nick Robinson asked Tanya Steele, interim CEO of Save The Children, whether the recent slowdowns in the numbers of refugees showed tough responses from countries like Turkey were working.   

David Goodhart, director of the integration hub at the Policy Exchange think tank, has been warning rich countries about the impact they could have on poorer nations by being too "tempting" to migrants.