Israel targeted Yakhont missiles using submarines

"The enemy knows the truth" & Israel won't comment either way under its policy of not publicly interfering in Syria: Hanegbi to @Galey_Zahal
— Dan Williams (@DanWilliams) July 14, 2013

What you see above is about as official a statement as you are likely to get from an Israeli government source on this.

But off the record, it's all-but-been confirmed that Israel targeted Syria's Yakhont