TEL AVIV, Israel (AP) — 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, devastated part of Gaza over the brink. Famine was now moving south in Gaza, she said.

A WFP spokesman later told The Associated Press that one of the three benchmarks for a formal famine declaration has already been met in northern Gaza and another is nearly met — important details on how far the effort to document deadly hunger has progressed.