As Israel begins offensive on Gaza City, an exhausted military may face a manpower problem

As the earliest stages of a massive assault on Gaza City take shape, Israel is calling up tens of thousands of reservists to take part in the impending military operation.

​ As the earliest stages of a massive assault on Gaza City take shape, Israel is calling up tens of thousands of reservists to take part in the impending military operation. Read More Breaking News, Latest News and Videos | CNN