Does someone fighting unarmed threaten the area around them? According to the SRD, you threaten squares into which you can make a melee attack, but unarmed attacks are listed separately from melee attacks, implying that they are not the same. Additionally, the Improved Unarmed Strike feat, and by extension the monk abilties don't specify that you now threaten an area. It is specified that if an unarmed combatant strikes someone with IUS, that they would incur an AoO, but no other situations that would normally incur an AoO are clarified. All that I can gather from IUS is that you are considered armed and so wouldn't incur attacks of opportunity when fighting, but does that mean you threaten an area?