The Jamestown Foundation's Terrorism Monitor:

Cheney Attack Reveals Taliban Suicide Bombing Patterns
...Iraqi suicide bombers from such jihadi groups as Ansar al-Sunnah and al-Qaeda in Mesopotamia frequently seek to inflict high casualty rates by attacking soft targets, such as crowded markets. Their objective is to cause as much bloodshed as possible, incite sectarian violence and destroy U.S. efforts to construct civil society in Iraq. Afghan suicide bombers, on the other hand, appear to have different objectives and have focused almost exclusively on hard targets (government, police, military). In 2007, for example, the Taliban have attacked foreign or Afghan military/police targets in 16 of their 22 bombings (in three cases the target was undetermined).

This in-depth analysis of 158 Afghan suicide bombings since 2001 shows that this is no anomaly and demonstrates an important point: in only eight of the 158 suicide attacks from 2001-2007 did civilians appear to be the direct target of Afghan bombers. Further scrutiny of these eight civilian attacks reveals an important fact. In two of these instances, the Taliban apologized for inflicting civilian casualties and in one case a Taliban spokesmen actually denied involvement. In four other cases the suicide bombers seem to have been targeting passing military convoys or governmental representatives in crowds; therefore, the high civilian casualties appear to have been unintended "collateral damage." In only two instances were civilians clearly the target of Afghan suicide bombers.

These findings tell us volumes about the Taliban's overall strategy in employing suicide bombing as a tactic. Far from imitating Iraqi insurgent tactics, the Taliban are trying to avoid losing the battle for the hearts and minds of the Afghan people by needlessly killing civilians....