The US has showed that intervention simply doesn't help, so what's the point of it?
You know this already but let me spell it out to you.
The US government makes decisions on interventions and cares nothing about anything except itself and reelection.
The Generals and other professional soldiers who climb through the ranks to positions of power train the people below them or at least control them for a period, but have no say in interventions.
When they retire big companies hire ex generals and other high ranking military officers because they know they have influence in the military and also the pentagon.
Those same big companies have enormous pockets and can wine and dine the particular members of government that decide who to invade and which companies will get the contracts to clean up afterwards.
Bombing countries cost a half a trillion dollars or more, but most of that money was recovered in contracts to US companies to rebuild what was destroyed... either from the newly installed governments under US control and including local funds and US provided loans that dictate who gets the contract.
Whether those companies get money from the bombed country or from the US "aide" to rebuild afterwards they will make a fortune which in turn finances their "contribution" to both political parties to ensure favourable laws get passed and contracts are given to the right company.
If you think protests is going to stop that you are mistaken... most politicians care about their own pockets and if they will be reelected and that can be bought and paid for too.