Blast at NATO base in Kabul; casualties feared

A suicide blast has taken place at one of the main bases of NATO in Kabul.

Three foreign soldiers and three Afghan civilians have been injured, according to news reports.

Initial Reports also suggest the blast was followed by small arms fire. The area was sealed off by Western and Afghan forces. It is not clear whether the blast occurred inside or outside the compound.

The attack comes amid intense debate over US strategy in Afghanistan, with President Barack Obama yet to make a decision on troop numbers.