Despite global awareness, land mines are difficult to find and expensive to remove; often they infest areas still plagued by internal strife. After Diana's death, land mines were supposedly outlawed.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/its-not-pretty-picture
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/newsweek-new-york