Delhi Chief Minister Arvind Kejriwal has refused to accept any security for himself or his office despite an attack on the Aam Aadmi Party headquarters in Ghaziabad this morning. "The problem will not be solved by staying under cover," he told reporters.br br After a mob of around 50-60 people vandalised the AAP office, the Ghaziabad Police had urged Mr Kejriwal to review his refusal to take security and said they will post personnel at his office and house.