Imperfect deal will help an uneasy peace 

Iran now has the knowledge and expertise needed to build a nuclear weapon, writes Nicholas Burns

http://www.ft.com/intl/cms/s/0/539e2390-d7d3-11e4-849b-00144feab7de.html?ftcamp=crm/email/201546/nbe/Comment/product#axzz3WX7aUb00