How did Israeli intelligence fail to stop Hamas's major attack from Gaza? 

 United States Response to Hamas Actions:-

The United States Department of Defense strongly condemned Hamas's actions over the weekend, labeling them as "ISIS-level savagery" during a press briefing. A senior defense official revealed that the U.S. is swiftly fulfilling Israel's requests for additional munitions and air defense. A few planes have proactively been conveyed to offer the essential help. Furthermore, the USS Passage strike bunch, furnished with cutting-edge abilities, for example, knowledge gathering and long-range strikes, is set to presently show up in the locale. The strike bunch incorporates transporters, cruisers, and destroyers, supporting the U.S. presence nearby.

International Involvement and Iran's Denial:-

U.S. specialists underlined that there is no substantial proof ensnaring Iran in the preparation for Saturday's assault. Regardless of this, Iranian Preeminent Pioneer Ayatollah Ali Khamenei denied Iran's association while communicating profound respect for the culprits.

Analyzing Israeli Intelligence Failure:- The failure of Israeli intelligence to anticipate Saturday's attack has raised significant concerns. Retired U.S. Army Lieutenant General Mark Schwarz, who previously served as the U.S. security coordinator for Israel and the Palestinian Authority until 2021, shed light on the issue. He pointed out that Hamas exhibited exceptional discipline by abstaining from technical communications, ensuring their operation remained covert. This strategic move prevented electronic surveillance from compromising the mission. Schwarz highlighted that Hamas, as a seasoned terrorist organization, assimilated knowledge from past experiences and adapted their tactics, enabling them to execute the attack successfully without leaving digital traces.