WASHINGTON (Reuters) -U.S. Secretary of State Antony Blinken on Thursday said he would discuss during a trip to Israel "concrete steps" that should be taken to minimize harm to Gaza civilians amid mounting alarm over soaring casualties in Israel's bombardment of the enclave. Speaking to reporters before departing on his second Middle East trip in less than a month, Blinken said discussions will also focus on the future of Gaza when and if the Palestinian militants of Hamas are defeated, getting more humanitarian aid into Gaza and ways to ensure the conflict does not spread.