pakistani military, but also because the u.s. went ahead with the raid without talking to the pakistanis about it. so there's a lot of mistrust on both sides. for her part, secretary clinton giving a very tough message in terms of what the u.s. is looking for. action against al qaeda operatives joint operations, going against those factories that produce ieds that are used against u.s. troops in afghanistan and also support for taliban reconciliation with the afghan government. this is seen as key to bringing u.s. troops home, zain. so a lot that the u.s. needs pakistan to do and as tense as the relationship is, both clinton and mullen saying that the relationship is too important to abandon. >> senior u.s. state department producer elise labott traveling with the secretary of state, hillary clinton, in pakistan. thanks, elise. this is "world one" live from london. facebook's billionaire founder admits he's a killer of farm animals, that is. we'll tell you why.