REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE CONTENT OF PART OF THIS VIDEO, WHICH HAS BEEN OBTAINED FROM A SOCIAL MEDIA WEBSITE<br/> <br />EDITORS PLEASE NOTE: THIS EDIT CONTAINS MATERIAL THAT WAS ORIGINALLY 4:3<br/> <br />In a statement to the nation, Egyptian authorities warn against any unrest that would disrupt Sunday's 40th anniversary of the 1973 war with Israel.<br/> <br />Despite this warning, both opponents and supporters of the Muslim Brotherhood have called for mass protests.<br/> <br />During the broadcast, interim President Adly Mansour appeared to reassure Egyptians that free and transparent elections would be delivered soon.<br/> <br />Political tensions have gripped Egypt since the army ousted President Mohamed Mursi in July, installing an interim government.<br/> <br />Hundreds have died in the unrest.<br/> <br />Here video taken from a social media website appears to show clashes between supporters of Mursi's Muslim Brotherhood party and the military.<br/> <br />Reuters cannot independently verify the foot
