The Times reviewed the minutes of 10 meetings among Hamas’s top leaders. The records show the militant group avoided several escalations since 2021 to falsely imply it had been deterred — while seeking Iranian support for a major attack.

Minutes of Hamas’s secret meetings, seized by the Israeli military and obtained by The New York Times, provide a detailed record of the planning for the Oct. 7 terrorist attack, as well as Mr. Sinwar’s determination to persuade Hamas’s allies, Iran and Hezbollah, to join the assault or at least commit to a broader fight with Israel if Hamas staged a surprise cross-border raid.

The documents, which represent a breakthrough in understanding Hamas, also show extensive efforts to deceive Israel about its intentions as the group laid the groundwork for a bold assault and a regional conflagration that Mr. Sinwar hoped would cause Israel to “collapse.”

The documents consist of minutes from 10 secret planning meetings of a small group of Hamas political and military leaders in the run-up to the attack, on Oct. 7, 2023. The minutes include 30 pages of previously undisclosed details about the way Hamas’s leadership works and the preparations that went into its attack.

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