Richard Benyon: Climate Change. There’s an opportunity, as this Commonwealth summit opens, to follow the Queen’s lead.

It is vital that we discuss how we eliminate the plastic waste brought to the surface of our collective consciousness in Blue Planet II.

Vicky Ford: There are easy wins available in environmental policy

Voters, economic reality and climate change all press for further action. Here’s what we could and should do to make our land even greener and more pleasant.

Simon Clarke: A greener City of London will outpace Paris and Frankfurt after Brexit

The Government should back the fastest growing sector of the economy, demand transparency and send clear policy signals.

John Hulsman: We should worry less about Putin, and more about China

The President makes a wonderful Bond villain but Russia is merely an ageing, corrupt gas station with nuclear weapons, no longer a Great Power.

Mark Francois: States like Russia now pose the primary threat to the UK – we must strengthen our defences accordingly

The erroneous assumption that hostile states were no longer relevant has rightly been abandoned. Now our Armed Forces need the resources to meet the challenge.

Trump’s economic nationalism could be his undoing

Obama’s trade restrictions destroyed more jobs than they saved. Free trade has proven itself as the most remarkable mechanism to generate prosperity. Yet it is under attack yet again.

North Korea. Trump goes where the sainted Obama could never have gone.

One take on the President is that behind the flamboyant tweeting is a conventional actor, who knows full well that jaw tweet jaw is better than war tweet war.

Alex Morton: It’s time to turn the Department for International Development into a Department for Humanitarian Relief

At a time when austerity continues, we need to be explain that we are not wasting taxpayers’ money on a grand delusion that we can create prosperity.

Alexander Temerko: Why Williamson is right to seek higher defence spending

After years of defence cuts and maybe more to come, we must ask whether the Armed Forces are properly equipped to keep Britain safe.

As fingers start to point, who might want a push to topple May?

Trips abroad are notoriously dangerous for Prime Ministers. As discipline wobbles while May visits China, we look at who might be interested in rocking the boat.

J.P.Floru: Let’s be Singapore – and prosperous, post-Brexit, beyond our wildest dreams

Basically, we need to undercut the world. We can do so if we slash red tape and tax. Within a very short period there would be a pronounced Laffer Effect.

Benedict Rogers: Britain must honour Major’s promise that ‘Hong Kong will never have to walk alone’

China is disregarding its pledge of ‘one country, two systems’ – as a result the rule of law in the territory is under threat from growing autocracy.

Bob Seely: Post-Brexit, we need to be the world’s smart power nation. Let’s make it happen.

Our plan seems to have been little more than to cobble together just enough kit to make us a Great Power on the cheap. That cannot continue.

Dan Lambeth: Why research and development tax credits work

The debate has come to symbolise much of what differentiates us from the Left: robust policy based on evidence that supports free markets, versus dogma based on statism.

Johnson’s Trump initiative. Repulsive – but Right.

The brutal reality is that Britain needs the country the President governs – and so by extension needs him too.