What Is the Difference Between Illegal Behaviour and Unethical Behaviour

What is the difference between illegal behaviour and unethical behaviour?
What is illegal varies from country to country, but what is unethical does not.
Illegal behaviour is that which breaks a country's laws, but unethical behaviour may not break any laws.
It is not possible to say what the difference is between illegal and unethical behavior.
Illegal behaviour covers a broader range of issues than unethical behavior.
There is no real difference between illegal and unethical behavior.