Original sentence: President Jimmy Carter, through Saudi Arabian channels in particular, encouraged Saddam Hussein to undertake the war.The war began when Iraq invaded Iran on 22 September 1980 following a long history of border disputes, demands for the overthrow of Saddam Hussein's regime, and it was claimed that before the war began in 1980, U.This has not been established beyond an assertion
Edited sentence: The war began when Iraq invaded Iran on 22 September 1980 following a long history of border disputes, demands for the overthrow of Saddam Hussein's regime, and secret encouragement by the US administration (President Jimmy Carter, conveyed through Saudi Arabia) which was embroiled in a dispute with the new Islamic Republic of Iran