GAZA CITY, Gaza Strip — Gaza militants resumed rocket attacks on Israel on Friday, refusing to extend a three-day truce after Egyptian-brokered talks between Israel and Hamas on a new border deal for blockaded Gaza hit a deadlock. Israel responded with a series of airstrikes, including one that killed a 10-year-old boy and wounded five children near a Gaza City mosque, Palestinian officials said. Two Israelis were wounded by rocket fire, police said.