Keep in mind, reasonable force might include running away.
Depends on the state. If you're in a Stand Your Ground state, there's no duty to flee. If you aren't, then you probably have a duty to flee an attacker if possible, unless this is at your house, they have entered your home illegally and refuse to leave.
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Depends on the state. If you're in a Stand Your Ground state, there's no duty to flee. If you aren't, then you probably have a duty to flee an attacker if possible, unless this is at your house, they have entered your home illegally and refuse to leave.