By Nidal al-Mughrabi GAZA (Reuters) – As Israel’s campaign against the militant Palestinian Islamic Jihad in Gaza moved into its second day on Saturday, residents of houses targeted for destruction said they were given 15 minutes warning to evacuate. “What can we do with 15 minutes?” said 68-year-old Nadia Shamalakh, who cares for four disabled sons and daughters in Gaza. “We took nothing away with us.” The Israeli military said a number of houses doubling as either Islamic Jihad weapons depots or command and control centres for the group were hit on Saturday. It said inhabitants of the homes …