The goal from the beginning was to get Boy Jorge re-elected and provide defense jobs. They never had any intention of winning,only fighting.
This is not the 1940's. We no longer have to declare war against an entire nation to reduce threats to our nation. All we have to do today is track the money,and eliminate the people transporting it and profiting from it,and take them out. No money to pay the soldiers,feed them,and transport them means no soldiers to fight. Killing the bankers,Arab noblemen organizing it,the middlemen who arrange the actual shipping,and the major suppliers means there is no war to fight.
If we really want to get medieval with them,we have the ability to just shut down the countries providing the men,weapons,and money. Nothing goes in or comes out until there is a regime change.
Since we have done none of this,the obvious conclusion is we don't WANT to do any of this.