If American engagement lasts until 2024 it will mean the U.S. has been involved in Afghan wars for most of the previous 46 years. It began in 1978 when Washington (and Saudi Arabia) started to finance the right wing Islamist mujahedeen uprising against a left wing pro-Soviet government in Kabul. The left regime was finally defeated in 1992 and the Taliban emerged as the dominant force among several other fighting groups in the mid-90s.