The Maoists launched a co-ordinated assault Maoist rebels have attacked a security post in central India, killing 50 police officers, police say.The attack, one of the worst in decades of insurgency, happened in the rebel stronghold area of Dantewada, in Chhattisgarh state. The Maoists, who have fought a 30-year insurgency, say they are fighting for the rights of landless farmers and neglected tribes. Thousands have died in their campaigns in central and southern India. Co-ordinated assault The rebels attacked the security post - manned by 75 policemen - in Bijapur just before dawn on Thursday. Under cover of darkness,...