[00:00.400]BBC News of Michael Poles. [00:03.060]The head of the US Central Military Command General David Petraeus [00:06.770]says he's appointed a brigadier general to conduct an investigation into the American use of air strikes in Afghanistan. [00:13.530]He said US forces had to be very sensitive [00:16.290]and ensure that their tactical action would not, as reported, undermining their strategic objectives. [00:21.860]General Petraeus was responding to a call from the Afghan President Hamid Karzai for the halt to the strike. Petraeus [00:28.130]Sarah Moritz’s report. [00:29.430]After a week in which many civilians were killed during American air strike in west Afghanistan, [00:35.460]President Karzai said that Afghan people were part of the struggle against terrorism and that they should be safe. [00:42.140]Hundreds of students have been protesting in the Afghan capital Kabul against last week’s air strike. [00:48.100]Local residents say nearly 150 were killed in the attack. [00:52.550]General Petraeus said that the US was aware of the danger of losing support among civilians, Petraeus [00:58.260]and he is naming a senior military figure to study the use of such tactics. [01:02.920]