Opening borders is the easiest way to tackle global poverty and it would make already wealthy countries richer, too.
We check the facts on how Australia's foreign aid spend has changed over time.
Options are open for how to spend £1.4 billion of British aid channelled through EU.
Nearly 5m tonnes of coal will soon be shipped through the Sundarbans each year.
Britain uses its aid for soft power. How will that change after it leaves the EU?
The ranks of a 'new urban poor' in Europe are swelling.