The News Corp phone hacking scandal continues to engulf police and politicians, with a second senor police officer resigning. <br /><br />John Yates, the UK's top counter-terrorism officer has quit, leaving the leadership of the force in turmoil. <br /> <br />Prime Minister David Cameron is to cut short his trip to Africa and will return to Britain to address the crisis at an emergency parliamentary debate on Wednesday. <br /><br />Al Jazeera's Andrew Simmons reports.
