Israel Purposely Leaving Rockets for Hizbullah to Launch?

According to Thomas Ricks, Reporter for The Washington Post, US military sources say that Israel is purposely not destroying Hizbullah rockets so that the extremist group can shell Israel, thereby providing reason for Israel to continue its invasion of Lebanon. ...

Via America Blog, Ricks told CNN:

THOMAS RICKS, REPORTER, "THE WASHINGTON POST": I think it will be. But I think civilian casualties are also part of the battlefield play for both sides here. One of the things that is going on, according to some U.S. military analysts, is that Israel purposely has left pockets of Hezbollah rockets in Lebanon, because as long as they're being rocketed, they can continue to have a sort of moral equivalency in their operations in Lebanon.

[Howard] KURTZ: Hold on, you're suggesting that Israel has deliberately allowed Hezbollah to retain some of it's fire power, essentially for PR purposes, because having Israeli civilians killed helps them in the public relations war here?

RICKS: Yes, that's what military analysts have told me.