WASHINGTON, Oct 10 (Reuters) - The U.S. is talking with Israel and Egypt about the idea of a safe passage for Gaza civilians as Israel strikes the enclave after a deadly Hamas attack over the weekend, U.S. national security adviser Jake Sullivan said on Tuesday. "We are focused on this question, there are consultations going on," Sullivan told reporters at the White House. "But the details of that are something that are being discussed among the operational agencies and I don't want to share too much of that publicly at this time," Sullivan said. Israel has battered Palestinians with deadly...