Reletter
Artwork for Challenging Geopolitics

Challenging consensus and misconceptions.

Platform
Substack
PricingFreemiumPublishesTwice weekly
Issues82Foundeda year agoLast Issue11 days ago
Active

Read this Newsletter

challengerresearch.substack.com
Artwork for Challenging Geopolitics

Latest Issues

The Indispensable Outsider

On 17 June 2026, the leaders of the G7 issued a declaration on securing critical mineral supply chains from their summit at Evian. It is a serious and ambitious document, born from two years of accelerating recognition that modern economies...

11 days ago
8

Humans Will Never Colonise Mars

Colonising Mars is not prevented by engineering, but by the engineer

The reasons a permanent Martian civilisation will not happen are written into human nature, and no rocket will solve them.

14 days ago
10
Paid

Britain's Unserious Defence Budget

The UK’s defence budget was delayed for over a year. Now that it’s finally been released, it has triggered a political storm so intense that Defence Secretary John Healey and Armed Forces Minister Al Carns have both resigned.

Subscribe now...

15 days ago
9

Off-World Compute: Serious Solution or Costly Distraction?

The engineering reality and economic fragility of orbital data centres

The report below forms a portion of a wider report we have conducted on the sector. For more information, please get in touch.

19 days ago
12
Paid

Britain's Unserious Defence Budget

The Price of Three-Tenths of a Percent

“A serious country funds its defence to meet the threat it actually faces, not the threat it wishes it faced.” – Al Carns, in his resignation letter, 11 June 2026.

23 days ago
15
2
Paid

Key Facts

Contact Information
Newsletter Author
Number of Subscribers
Find out how many people subscribe to this newsletter.

Audience Metrics

Subscribers, engagement, traffic and sponsorship for Challenging Geopolitics.

SubscribersEngagement76Monthly Web Visits
Accepts SponsorsEstimated Cost per Ad

Authors

The writers behind this newsletter.

  • Challenging Geopolitics

    The world beyond easy answers.

  • George Wightman

  • James Reeves

    Founder & Director of Challenger Research Ltd, Head of Research

  • Ed Shannon

    Director at Challenger Research. Interested in financial markets, geopolitics, aerospace & defence, history

  • Alejandra Bouzas Monroy
  • Sofia Zanin
  • Frequently Asked Questions

    How can I access the email archive for Challenging Geopolitics?

    You can find recent issues that have been published by Challenging Geopolitics on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.

    How many subscribers does Challenging Geopolitics have?

    To see how many people subscribe to Challenging Geopolitics, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.

    How can I advertise in Challenging Geopolitics?

    Newsletter advertising can be extremely effective when it's done right. Before you pitch Challenging Geopolitics as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.

    Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.

    How much does it cost to sponsor a publication like Challenging Geopolitics?

    Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.

    To find out how much an ad will cost, contact Challenging Geopolitics using the contact information provided and ask for a copy of their media kit.

    How can I find newsletters related to Challenging Geopolitics?

    Scroll up to where it says Related Newsletters to see other publications like Challenging Geopolitics. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.

    How do I contact Challenging Geopolitics?

    Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.