According the Feb. 14 NY Times:
“Mr. Mugniyah had not been accused of planning new attacks in more than a decade.”
And the Feb. 15 edition?
“Mr. Mugniyah was in charge of Hezbollah’s special operations and its military wing. Israeli experts described him as his organization’s military chief of staff. Some here believe that he oversaw the capture of two Israeli soldiers, Ehud Goldwasser and Eldad Regev, in a cross-border raid in July 2006 that set off that summer’s monthlong war against Hezbollah in Lebanon.”
(Hat tip: James Taranto)