 In March 1994, a team of British scientists estimated that 57% of the marshlands have been drained and that in 10 to 20 years the entire wetland ecosystem in southern Iraq will be gone.In April 1994, the U.S. officials said Iraq was continuing a military campaign in Iraq's remote marshes.Iraq saw further unrest in its Shia dominated provinces in early 1999 following the killing of Grand Ayatollah Mohammad Mohammad Sadeq al-Sadr by the government.