MMasters in Business
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StrategyLeslie Gelb

Foreign Policy Error-Correction Loop

Detect strategic mistakes early and reverse them before damage compounds

Difficulty
Advanced
Time to result
~ongoing to results
Steps
5
Confidence
96%

The loop begins by accepting that imperfect knowledge and limited power make strategic mistakes unavoidable. Decision-makers then keep their assumptions provisional rather than treating an initial commitment as proof that the policy is correct. They define signals that would reveal a mistaken diagnosis, compare real outcomes with the intended result, and revise the policy when those signals appear. The mechanism is continuous: uncertainty creates risk, open-minded monitoring exposes error, and timely correction prevents escalating commitments from turning a mistake into a blunder. The framework does not demand indecision or perfect foresight. It demands enough intellectual flexibility to distinguish consistency from stubbornness and enough institutional discipline to reverse course while the damage remains containable.

Origin

Leslie Gelb described this as the philosophy he developed after watching foreign-policy professionals repeat mistakes in Vietnam, Iraq, and elsewhere. Extracted from Masters in Business.

Core principles

  • 01Mistakes are inevitable when knowledge is incomplete
  • 02Desired outcomes often exceed available power
  • 03Open-mindedness makes correction possible
  • 04Persistence turns ordinary mistakes into destructive blunders

How to run it

  1. 1

    Map the uncertainty

    List what is known, what is inferred, and what remains unknown about the environment. Give special attention to local culture, politics, incentives, and history.

    Pro tip Ask what a knowledgeable local observer would challenge in your diagnosis.

    Watch out Confidence based on general ideology is not a substitute for country-specific knowledge.

  2. 2

    Test power against ambition

    Compare the outcome you want with the economic, political, and military leverage actually available. Reduce the objective when available power cannot plausibly produce it.

    Pro tip Separate the ability to win an opening contest from the ability to create a durable settlement.

    Watch out Operational superiority can conceal strategic weakness.

  3. 3

    Define failure signals

    Specify observable evidence that would show the policy is not working or that its assumptions were wrong. Establish these signals before institutional commitment hardens.

    Pro tip Include a time horizon for each expected result.

    Watch out Vague success criteria allow any result to be rationalized.

  4. 4

    Review with an open mind

    Regularly compare evidence with the original assumptions and intended outcomes. Treat contrary evidence as information rather than disloyalty.

    Pro tip Assign someone to make the strongest evidence-based case that the policy is failing.

    Watch out Status, sunk costs, and political embarrassment can suppress honest reassessment.

  5. 5

    Correct before compounding

    Change the objective, method, or commitment when the evidence warrants it. Act before defending the mistake produces greater suffering and fewer exit options.

    Pro tip Prefer the smallest correction that genuinely addresses the mistaken assumption.

    Watch out A cosmetic adjustment can preserve the same flawed strategy under a new label.

In the wild

Gelb reverses his position on Iraq

Gelb initially endorsed the Iraq War. Within months, the absence of weapons of mass destruction and the lack of a credible post-invasion plan showed him that the central assumptions had failed, so he changed his position rather than defending the original judgment.

→ He opposed continuing the policy once its factual and strategic foundations proved unsound.

A company tests an overseas expansion

A company enters a new market on the assumption that its domestic sales process will transfer. It sets conversion and retention thresholds in advance, discovers that local buying behavior differs sharply, and replaces the rollout with a local-partner pilot instead of increasing advertising spend.

→ The company contains its losses and tests a revised strategy before making a larger commitment.

Common mistakes

Treating commitment as validation

Resources already spent do not prove that the original diagnosis was correct. Sunk costs often make reassessment more important, not less.

Waiting for undeniable failure

By the time failure is indisputable, the cost of correction may be much higher and viable alternatives may have disappeared.

Changing tactics but not assumptions

More resources or a different operational method will not rescue a strategy built on a false understanding of the environment.

Is it for you?

Best for

Leaders making consequential decisions with incomplete information and limited control.

Not ideal for

Routine decisions that are cheap, reversible, and supported by complete information.

From the transcript

“And the most important thing you can do is keep your mind open to the possibility that you did make a mistake, so that you…”

Leslie Gelb · 49:31

“We believe our way into these wars because we make these decisions without knowing about the countries were getting involved in.”

Leslie Gelb · 40:50

“I should have had a better appreciation of what our power could accomplish in different places at different times, and what it could not accomplish.”

Leslie Gelb · 1:15:20

From the episode

Foreign Affairs Expert Leslie Gelb: Masters in Business (Audio)

Leslie Gelb

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