The Israeli Air Force said it destroyed rocket launchers in the Gaza Strip during the night after pojectiles were fired on towns close to the border. Rockets were fired from Gaza onto the Israeli town of Sderot on Thursday and Zikim on Friday, the Israel Defense Forces (IDF) said. The IDF also said ground troops killed at least 28 opponents and found weapons and military equipment in battles against the Palestinian Islamist Hamas in central Gaza and western parts of Khan Younis, a city in the south. The IDF said it used a new type of weapon, although the army refused to provide any further det…