US searches for source of highly-classified intel leak

Highly classified military and intelligence documents that appeared online, with details ranging from Ukraine's air defenses to Israel's Mossad spy agency, have US officials scrambling to identify the leak's source, with some Western security experts and US officials saying they suspected it could be someone from the US.

Officials say the breadth of topics addressed in the documents, which touch on the war in Ukraine, China, the Middle East and Africa, suggest they were leaked by an American rather than an ally.