peterwsterling

This plug-in allows you to record a country against your posts. 
For example the country that the post talks about, the event took place in, the location you are writing the post from, etc. Your imagination is the limit… 
Once a post is tagged with a country the plug-in allows flag icons to be added to your blog’s pages with simple additions to your template files. 
Country icons can be clicked on to take the user to a list of posts from that country. 
There’s also a sidebar widget that creates a popup to navigate to posts from that country.
Please consider supporting ongoing development of this plugin by taking a look at the <a href='http://www.sterling-adventures.co.uk/blog/2013/09/01/wordpress-mapping-plugin/' rel="nofollow ugc">enhanced mapping version of this plugin</a> available at the <a href='http://www.sterling-adventures.co.uk/blog/2008/04/01/post-country-plug-in/' rel="nofollow ugc">plugin’s home page</a>. The enhanced version offers a neat mapping interface to your blog with many features such as geo-location of your posts, showcasing <a href='http://en.support.wordpress.com/featured-images/' rel="nofollow ugc">featured images</a> from your posts, presentation of <a href='http://en.wikipedia.org/wiki/GPS_eXchange_Format' rel="nofollow ugc">GPX</a> tracks, GPX elevation graphs, recording countries against your posts, and much much more.
<h4>How to record a Country against a Post</h4>
To add a country to post use the In which Country was the Adventure? box select the country from the dropdown. 
There are also more instructions etc. on this <a href='http://www.sterling-adventures.co.uk/blog/2008/04/01/post-country-plug-in/' rel="nofollow ugc">page</a>…

Post Country

This plug-in allows you to record a country against your posts.

azurecurve

Allows a 16×16 flag to be displayed in a post of page using a [flag] shortcode.
Format of shortcode is [flag=gb] to display the flag of the United Kingdom of Great Britain and Northern Ireland; 247 flags are included.
Defintion of flags can be found at Wikipedia page ISO 3166-1 alpha-2: https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2

azurecurve Flags

Allows a 16x16 flag to be displayed in a post or page using a shortcode.

Post Country vs azurecurve Flags