In an Al Arabiya interview:

“That ingenious moment when the Al-Qassam Brigades managed to surprise the enemy and all the intelligence agencies in the world had to be kept a secret. We did not embark on a new type of resistance. It is all part of the atmosphere of resistance. When a certain measure is taken, it is in the context of the legitimate that our people have agreed on.”“Exclusive: ‘Israel will kill us, whether we resist or not,’ says former Hamas chief,” Al Arabiya, last updated October 21, 2023, https://english.alarabiya.net/News/middle-east/2023/10/19/-Israel-is-killing-us-whether-we-resist-or-not-says-former-Hamas-chief.