The official United States State Department app (for iPhone) has been released. This app will be frequently updated with official country information, travel alerts, travel warnings, maps, U.S. embassy locations and more.
You select the country or area you are interested in from a list. Then, you can “know before you go” to get travel warnings on that specific country or region. You can even build an e-tinerary so that the State Department can better assist you.
You can learn more about the program from the official Department of State home page.