On Oct. 7, 2023, I was at Disney World with my family when I awoke to messages that Hamas terrorists had attacked Israel.One year earlier, during my 27th trip to Israel, I visited Kfar Aza, a kibbutz that was brutally attacked. Were the people I met still alive? What about the therapy animals that comforted traumatized residents on the Gaza border? Three years later, the fear and uncertainty from that day have not passed.Yechiel Leiter, Israel’s ambassador to the United States, poignantly noted that Oct. 7 was “cultivated in an ideology that believes killing Jews is admirable and that there...