The strong would take what he wants and the weak would be left unprotected.
That is happening even now, right? Strong nations such as the United States and China are bullying the weaker nations such as Syria, Libya, Philippines and Vietnam. But this situation will always exist and having a strong leader can't change this. For example, the Philippines is having a very strong leader in the form of Duterte. But he can't do much against the Chinese aggression.