UN says there's 'full-blown famine' in northern Gaza. What does that mean?

TEL AVIV, Israel — The head of the United Nations World Food Program says northern Gaza has entered "full-blown famine" after nearly seven months of war between Israel and Hamas. But a formal, and highly sensitive, famine declaration faces the complications of politics and of confirming how many people have died. Cindy McCain in an NBC interview broadcast Sunday said severe Israeli restrictions on humanitarian deliveries to the territory that has long relied on outside food assistance have pushed civilians in the most isolated...