Aggression in young children is a common problem and most parents don't understand how to deal with it.
Aggressive children is not an issue that can not be resolved. Though there are ways to take constructive action upon the situation, but the results are not quickly obvious, as it involves young children who lack maturity and self-control skills.
Parenting an aggressive children can be challenging, it is difficult to teach your child new and appropriate ways to interact with other children and with adults.