The United Nations strongly condemned on Wednesday an attack that killed the U.S. ambassador to Libya and three embassy staff and said the "horrific and tragic attack" further spotlighted the security challenges facing Libyan authorities. "The United Nations rejects defamation of religion in all forms, but there is no justification for violence such as occurred in Benghazi," U.N. Under-Secretary-General for Political Affairs Jeffrey Feltman told the U.N. Security Council during a regularly scheduled briefing on Libya. The U.S. ambassador to Libya Christopher Stevens (shown in 2011 AP file photo) and three embassy staff were killed on Tuesday as they rushed away from a consulate building in Benghazi that was stormed by al Qaeda-linked gunmen blaming America for a film they said insulted the Prophet Mohammad/Reuters. More here.
Question: How should America respond to this attack?