Theo Clarke: Investing in Africa will be key to achieving a Global Britain

Africa is home to 16 per cent of the world’s population, and this is set to double by 2050. Its GDP is expected to reach $3.2 trillion in the next five years.

Edward Parson: Keep the International Development Department. But scrap the 0.7 per cent aid target.

DFID managed its portfolio with far greater efficiency than the Foreign Office. But it should improve how it aligns traditional aid objectives with Britain’s goals.

Tom Tugendhat: The three foreign policy actions that Johnson should take now that he has this huge majority

For the first time in decades the levers of British influence – defence, diplomacy, aid and trade – could sit alongside domestic efforts in education and infrastructure.

Garvan Walshe: Merging DfID and the FCO makes sense in these tough times

A separate department was right for the stable, hopeful 1990s. But the years have presented various challenges for which it is less well-suited.

“Get out of London.” Now watch Johnson and Cummings turn the country upside down. Or try to.

Don’t expect Downing Street to bother too much about what MPs or the media think as it prepares to shake up government and Whitehall.

Lord Ashcroft: An open letter to Alok Sharma, the new International Development Secretary

We should measure the success of our aid programmes by the good we achieve, not simply by the amount of money we spend.

Patrick Spencer: Some advice for the new Conservative leader. Stick to these three ideas to boost productivity.

The new Chancellor should stick to the basics of cutting taxes, spending more on education and rebalancing growth outside of London.

Iain Mansfield: Brexit by October 31. Stop using the Left’s language. And stand for skilled workers. Essentials for our next Prime Minister.

Which candidate can devise and push through the policies needed to unite the Tory shires with the Leave voters of the north?

Clark Vasey: Only Johnson can deliver Blue Collar Conservatism

He is the only candidate who can further the work of the project to which Esther McVey and I are so committed.

Stephen Crabb and Desmond Swayne: The next Prime Minister must uphold Britain’s commitment to overseas aid

It’s so much more than charity: it bolsters our diplomacy and nurtures trading partners and military allies around the world.

Bob Seely: Saving Britain billions. Ideas for the contenders in this leadership contest.

This is a contribution to the debate – now let’s see what the candidates offer during the week ahead.

Profile: The unusual Rory Stewart, self-declared contender for the Tory leadership

His critics claim his appointment as International Development Secretary “could lead to the death of thousands of the world’s poorest people”.

Stewart is appointed DFID Secretary

He is one of the few middle-ranking Ministers who, while others were fleeing for the hills, girded himself up – and went out to fight for May’s Brexit deal.

James Frayne: What polling does and doesn’t tell us about voters and the environment

There are clearly dangers in accepting the terms set out by green activists – who essentially argue that we can only protect the environment by slowing growth.

WATCH: Hannan – “The surest way to eliminate poverty in the world is through freer trade”

He suggests that Western observers very often misread the situation in developing countries in a manner which deprives the latter of agency and opportunity.