Israeli forces are planning a widespread offensive, but didn't say when the assault would happen. The announcement came as hundreds of thousands of Palestinians scrambled to leave northern Gaza.

After the brutal attack on Israel by Hamas militants, Israel has begun air strikes on Gaza. The World Health Organization warns that the health system there is at a breaking point.

The conflict has heightened tensions on U.S. campuses. What is the role and responsibility of colleges right now?

Known as "the guest" for his habit of staying in a different house each night to evade Israeli attacks, Mohammed Deif, leader of Hamas' military wing, remains an enigmatic and shadowy figure.

The highly sophisticated, multibillion-dollar defense system has been under constant redevelopment since its inception in the early 2000s. Here's how it works.

Humanitarian groups are working to respond to the violence in Israel and Gaza. Here are some ways to help — and avoid getting scammed.

The surprise attack on Israel has brought the militant group back into the spotlight. A Hamas official tells NPR the attack was meant in part to lead to the release of Palestinians in Israeli jails.

"This is propaganda 101. You flood the gap, especially in those early hours, with content that suggests a certain narrative," said one observer.

Wafaa Abuzayda, her husband and baby were visiting family in Gaza when the fighting broke out. Now they're trapped and running low on diapers and milk. She says the U.S. embassy isn't helping.

The small, quiet enclaves have long thrived on leftist ideas about collective living. Those located near Gaza suffered some of the worst of the Hamas attacks, with hundreds reported dead.

The conflict is expected to escalate even further in the coming days. But for now, Hamas sees itself with the upper hand.

Israel carried out a fifth day of bombardments across the Gaza Strip as the Palestinian territory lost electricity, following one of the deadliest attacks against Israel in history.

Many Israelis are frantically looking for clues about loved ones believed to be held in Gaza. Ido Dan keeps watching a video that appears to show Hamas militants kidnapping his 12-year-old nephew.

With high poverty and unemployment and severe restrictions on movement, life in the Gaza Strip was already difficult before Israel's retaliatory offensive began this week in response to Hamas attacks.

Analysts have long accused Iran of backing militant groups in the region to counter Israel.