Oman deployed troops north of the capital Muscat and near the border with the United Arab Emirates today, following three straight days of anti-government protests. Oman, ruled by a powerful family dynasty, is the latest Arab nation to be swept up in a wave of regional unrest that has already brought down two leaders and threatened the rule of others.The centre of protests in Oman has been the port town of Sohar, about 200 kilometres northwest of Muscat, where demonstrators demanding higher salaries and jobs have clashed with police. Police killed a protester in Sohar on Saturday, after demonstrations turned violent. Several government buildings and a supermarket were set on fire, local media reported. A government official said today that troops and military vehicles were deployed around the capital and near Oman's border with the United Arab Emirates.