Related: A report by a British parliamentary intelligence committee warned that Iran was targeting dissidents and gathering intelligence on Jewish and Israeli targets in Britain. The Ukrainian authorities said yesterday that an elite officer from the S.B.U., its domestic intelligence agency, was gunned down in Kyiv in broad daylight.

A senior Israeli official says Israel believes deeply buried stocks of enriched uranium at one Iranian nuclear facility hit by the U.S. military are potentially retrievable

The question is how long it would take the Iranians to rebuild some or all of the nuclear capability, especially after the top scientists in their nuclear program were targeted and killed.