Peter Allen and Sam Walker with the day's news and sport. Clashes between police and protesters threaten to overshadow the start of the World Cup in Brazil, as thousands of fans head to the Arena de Sao Paulo for the tournament opener. We're in Sao Paulo, Rio and Manaus for the big build-up. President Obama says he is looking at 'all options' in response to the crisis in Iraq. And the Chancellor announces new plans to control mortgage lending.