Afghan fuel protests outside Iranian embassy
14 January 2011 Last updated at 15:58 GMT
In the Afghan capital Kabul there are have been fuel protests outside the Iranian embassy.
Demonstrators say Iran is preventing oil tankers from crossing the border into Afghanistan, because it suspects the fuel is being used by American and foreign forces.
Only a handful of tankers are making it through, and the cost of fuel in some parts of the country has risen by more than half.
From Kabul, Quentin Sommerville reports.