A thick cloud of black smoke blankets the city of Homs once again.<br/> <br />This footage from a video streaming website shows smoke billowing from a major oil pipeline which was hit by an explosion according to witnesses.<br/> <br />The city has become the centre of the 11-month uprising that has been raging against four decades of the Assad family rule.<br/> <br />But amid the turmoil, President Bashar al-Assad has ordered a referendum on a new constitution.<br/> <br />The announcement, made on state TV, said the vote would be held on February 26.<br/> <br />The new draft constitution is part of a set of reforms introduced in response to the insurgency.<br/> <br />If passed it would restrict the president to serving a maximum of two terms of seven years and introduce a pluralistic party system.<br/> <br />But with cities such as Homs in open revolt, critics say holding an inclusive referendum will be impossible.<br/> <br />Simon Hanna, Reuters.
