Publications · The Writing Branch

Three publications.
Three registers.

Meridian publishes through three distinct channels — each tuned for a different audience, a different voice, and a different kind of question. The work is the same institution. The way it reaches you depends on what you came for.

The Writing Branch

Why Meridian
publishes in three places.

Different arguments need different formats. Different formats reach different readers. The three Meridian publications exist because no single channel can do all the writing the institution needs to do.

Foresight carries the analytical work — long-form, source-cited, multi-domain essays for readers who want the argument with the evidence. It is the public-facing analytical voice of Meridian.

Wargames by Meridian carries the simulation work — methodology pieces, exercise reports, structured walk-throughs of how institutional decisions hold up under pressure. It is the methodological voice, written for practitioners.

Field Notes carries the institutional voice — what the institute is doing, what it has learned, what it is building, what surprised it. It is the founder’s-letter register, written for readers who want the institution itself, not just its outputs.

Each publication has its own cadence, its own editorial bounds, and its own subscription channel. All three are free to read.

The Three Publications

Each one is its
own thing.

Click through to the about page for each publication. Subscriptions are managed on Substack; the writing is freely accessible whether you subscribe or not.

7 Pieces Published · Active
Foresight
By Meridian
Long-form analysis on global risk, foreign policy, and the institutions doing the work.
The Analytical Voice
Foresight is where Meridian works arguments out in full. Each essay sits at the intersection of at least two of Meridian’s domains — epidemiology and policy, security and constitutional law, capital markets and global risk. Source-cited, evidence-attached, written for readers who want to follow the reasoning back to where it began. Published weekly.
About Foresight →
In Development · Launching 2026
Wargames
By Meridian
Methodology, exercise reports, and structured walk-throughs of decisions under pressure.
The Methodological Voice
Wargames by Meridian is the publication channel for the simulation and methodology work emerging from the Wargames Lab. Where Foresight argues, Wargames demonstrates. Where Foresight cites sources, Wargames cites exercises. Built for practitioners, policy planners, and researchers who care less about hot takes and more about how institutional decisions actually hold up when you stress-test them. First issues launching mid-2026.
About Wargames by Meridian →
In Development
Field Notes
By Meridian
Founder’s letters from the institute — what we’re building, what we’ve learned, what surprised us.
The Institutional Voice
Field Notes is the publication where the institute itself shows up — the work in progress, the things that didn’t go to plan, the unexpected discoveries, the milestones worth marking. Less formal than Foresight, more first-person, written for readers who want to know what an institution looks like when it is being built rather than presented. Working title; first issue forthcoming.
About Field Notes →
Why Three Channels

Different work
needs different rooms.

Meridian could publish everything in one channel. Most institutions do. The result is usually a single feed that does no register particularly well — too academic for casual readers, too casual for academics, too institutional for practitioners, too founder-y for institutions. Three channels lets each register find its right voice.

01 · Argument
Foresight is for readers who want the case
Long-form essays with the evidence attached. Citations linked inline. Multi-domain by design. The voice is institutional. The audience is anyone working on global-risk problems who wants the analytical argument in one piece.
02 · Method
Wargames is for practitioners
Simulation methodology, exercise reports, structured walk-throughs. The voice is operational. The audience is the policy planner, the institutional decision-maker, the researcher whose work depends on stress-testing assumptions before the crisis arrives.
03 · Institution
Field Notes is for readers who want the institute
Founder’s letters, progress notes, unexpected lessons, milestones worth marking. The voice is first-person. The audience is anyone interested less in Meridian’s outputs than in Meridian as a working institution being built in public.

Meridian is the independent research and applied-technology project of Mark Greenhalgh. Views, analysis, and materials published under the Meridian name are his own and do not represent the position of the U.S. Department of Defense, the Department of the Army, or any U.S. government agency or component. Meridian operates independently of his official duties.