* Israel is worried about the Delta coronavirus variant despite its widespread vaccinations. * Its leader described a recent surge as a "new outbreak" and announced new preventive measures. * About 70% of new infections were the Delta variant, the Israeli Health Ministry's director said. Israel says it is battling a new outbreak of COVID-19 that struck despite its success vaccinating its population. Prime Minister Naftali Bennett on Tuesday described a recent surge in infections as a "new outbreak" in the country. And the director of the Israeli Health Ministry said about 70% of new infections were the Delta variant....