Israel's military pounded the Palestinian enclave of Gaza on Sunday and killed hundreds of people a day after a surprise attack by Hamas group left over 600 Israelis dead, the worst attack on Israeli soil in decades. Prime Minister Benjamin Netanyahu asked the nation to prepare themselves for a "long and difficult" war a day after Hamas fired a barrage of thousands of rockets at Israel and sent a wave of fighters who gunned down civilians and took at least 100 hostages.