![Cars drive through a street in Iraq\'s central city of Najaf during a sand storm on April 29, 2019. (Photo/Agencies)](http://www.ecns.cn/hd/2019/04/30/4654e0d35c824cfcb31dd174f9b87059.jpg)
Cars drive through a street in Iraq's central city of Najaf during a sand storm on April 29, 2019. (Photo/Agencies)
![A man runs against the wind in Iraq\'s central city of Najaf during a sand storm, on April 29, 2019. (Photo/Agencies)](http://www.ecns.cn/hd/2019/04/30/b878cc69e23d47978d3fca826e06d142.jpg)
A man runs against the wind in Iraq's central city of Najaf during a sand storm, on April 29, 2019. (Photo/Agencies)
![A man walks near a wind-toppled motorcycle in Iraq\'s central city of Najaf during a sand storm on, April 29, 2019. (Photo/Agencies)](http://www.ecns.cn/hd/2019/04/30/7a93e5b4272149fa9ba9e57afab4aa18.jpg)
A man walks near a wind-toppled motorcycle in Iraq's central city of Najaf during a sand storm on, April 29, 2019. (Photo/Agencies)