But what was previously just a sliver of fortified land on the strip's northern and eastern perimeters now, in the aftermath of Israel's January offensive in the territory, swallows roughly 30 percent of Gaza's arable farmland, according to the FAO.
It stretches as deep as 1.25 miles inside Gaza's territory in the north and half a mile in the east, despite the 300-meter figure declared on the leaflets, the organization says. Gaza is just 25 miles long and slightly more than six miles wide.
Israel's rationale: prevent terrorism, future wars
The IDF Spokesperson's Unit officially declined to comment on actions taken in the buffer zone, as well as on whether or not warning leaflets had in fact been dropped.
But Shlomo Brom, an IDF veteran and senior research fellow at the Tel Aviv-based Institute for National Security Studies, says Israeli army policy in the buffer zone is perfectly reasonable given the frequency of attacks by Palestinian fighters.
According to IDF statistics, more than 7,000 rockets have been launched at Israel from the Gaza Strip since 2005. In 2006, Palestinian militants who dug a tunnel under the Israeli-Gazan border captured Israeli Cpl. Gilad Shalit, who has yet to be released.
"The buffer zone makes the digging of such tunnels much more complicated and much more difficult," says Brig. Gen. Brom (ret.). "And Israel established the zone mainly because Palestinian armed groups were attacking Israeli patrols with explosive charges on the Israeli side of the border."
Brom says stricter enforcement of the buffer zone in the wake of Israel's military assault is not aimed at making life more difficult for the people of Gaza, but to prevent them from suffering another similar attack in the future.
"The IDF is now more strict in maintaining this buffer zone because one of the reasons the recent military offensive was launched is because we allowed terrorist activities from Gaza to continue," says Brom. "If we are more strict and we don't allow the situation to deteriorate, then we can avoid a repeat of the last war. There is a smaller probability the fighting will escalate in Gaza."