The chairman of the powerful US House foreign affairs committee has said Israel received a warning from Egypt of potential violence three days before Hamas caught Israeli forces off-guard in a large-scale attack. “We know that Egypt has warned the Israelis three days prior that an event like this could happen,” Republican Michael McCaul told reporters on Wednesday, after a closed-door intelligence briefing for lawmakers on the crisis. “I don’t want to get too much into classified [details], but a warning was given,” he said. “I think the question was at what level.” McCaul said the attack may have been...