Gaza’s southernmost town‚ Rafah‚ is bursting at the seams. Nearly the last place spared an Israeli offensive so far‚ Rafah’s population has more than quintupled with Palestinians streaming in to escape fighting. They pack by the dozens into apartments. Sidewalks and once-empty lots are clogged with tents full of families. Panic and despair are rising after Israel said it intends to attack Rafah next. The estimated 1.5 million people sheltering there – more than half of Gaza’s...