During the 1970s Iraq produced up to 3.5 million barrels per day, but sanctions imposed against Iraq after its invasion of Kuwait in 1990 crippled the country's oil sector. The sanctions prohibited Iraq from exporting oil until 1996 and Iraq's output declined by 85% in the years following the First Gulf War. The sanctions were lifted in 2003 after the US-led invasion removed Saddam Hussein from power, but development of Iraq's oil resources has been hampered by the ongoing conflict.