It was an unusual and terse announcement: "In accordance with current assessments," the Israel army said on Saturday, the Kerem Shalom Crossing would be closed the next day. There was no further explanation.
Kerem Shalom is one of the Gaza Strip’s few lifelines to the outer world and the principal entry point for humanitarian aid.
The mystery was resolved at 7 a.m. Sunday, when Israel announced that its air force had destroyed a tunnel running from the Gaza Strip south into Egypt and north into Israel under the delicate triple-border area of Rafah.
Israeli authorities said the tunnel extended almost 600 feet into Israeli territory and was built solely with...