Israel is on high alert for a wider conflict following the Israeli army's announcement of the assassination of Lebanese Hezbollah leader Hassan Nasrallah, Israeli media reported.“We hope this will change Hezbollah's actions,” Israeli army spokesman Nadav Shoshani told a media briefing.“We have seen Hezbollah carrying out attacks against us for a year now. It is safe to assume that they will continue their attacks against us or try to do so,” he added.