"This is not a moment for any party hostile to Israel to exploit these attacks to seek advantage," Biden said in his speech.

Militants were recorded moving in on foot and on trucks, dirt bikes, and boats. One video shows someone flying in on a motorized paraglider.

Tensions flared along the border between Israel and Lebanon Sunday at a time when Lebanon is in almost total collapse.

On Saturday, the Israeli Defense Force announced it had eliminated the entire top brass of a Palestinian terror group.

Israeli forces were on guard Sunday to prevent smuggling at sea and respond to attacks on land, news reports show.