International Security

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To Disclose or Deceive? Sharing Secret Information between Aligned States

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Israeli Prime Minister Benjamin Netanyahu gestures while addressing a joint meeting of Congress on Capitol Hill in Washington, Tuesday, May 24, 2011. Vice President Joe Biden, left, and House Speaker John Boehner of Ohio, right, listen.
Israeli Prime Minister Benjamin Netanyahu gestures while addressing a joint meeting of Congress on Capitol Hill in Washington, Tuesday, May 24, 2011. Vice President Joe Biden, left, and House Speaker John Boehner of Ohio, right, listen.

Summary

When aligned states consider disclosing secret information about military plans to use force, the state initiating these plans may choose among four information-sharing strategies: collusion, compartmentalization, concealment, and lying. Three main considerations shape its decision: potential costs of deception, the partner’s intentions, and the partner’s capabilities. Case studies of Israel, Britain, and France's decision to use force against Egypt during the Suez Crisis; Israel's 2007 bombing of Syria's al Kibar reactor; and Israel's deliberations whether to attack Iran's nuclear reactor illustrate how states choose among information-sharing strategies.

Recommended citation

Melinda Haas and Keren Yarhi-Milo, "To Disclose or Deceive? Sharing Secret Information between Aligned States," International Security, Vol. 45, No. 3 (Winter 2020/21), pp. 122-161,

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