That's the Modus Operendi the US has operated under abroad for at least 70 years.Killing saves lives.
Why did we kill a million Iraqis? To keep us safe.
Why did we wage wars and kill countless others in dozens of countries all over the globe? The bizarre notion is that by murdering others, Americans are safer (if that were true, it would merely be evil, but in fact it's the inverse: The reason we are hated (or even *KNOWN* across much of the world, is because we are murdering their families and destroying their countries.)