In our top news today, a suicide car bomb in Herat kills two Afghan soldiers and wounds three others. Here's more. The defence ministry said in a statement that the suicide bomber detonated his explosives next to a moving army vehicle in the Mir Awad area of Herat province. [Bismellah, military police personnel]: "Today at around 8 in the morning a suicide attack took place on Afghan National Army vehicles. We do not have the exact report on causalities. Two soldiers may have lost their lives in this incident." Violence in Afghanistan has surged over the last year to its worst level since 2001, with Taliban militants launching more suicide and roadside bomb attacks in an attempt to show the Afghan government and its Western backers that they cannot bring about security. Separately, US-led coalition forces together with Afghan officials were investigating claims they had killed civilians during an operation targeting a Taliban network in Kapisa province, northeast of Kabul. The issue of civilian casualties is sensitive in Afghanistan and has eroded support for international forces. President Hamid Karzai said on January 20 that civilian deaths were a main source of instability in the country.