...this whole post is misleading.
Democrats I know were against the IRAQ war...not the war in Afghanistan...for four major reasons. One, it destabilized the ME...which was contained before GWB started that war. Al Qaeda was NOT in Iraq when we did 'Shock and Awe.' Two, it distracted us from fighting and winning the real war against Al Qaeda in Afghanistan/Pakistan...where OBL was. Three, the WMD lie that was used to trick the American people into supporting that war. Four, the lousy management which (top-down) allowed torture to occur on our watch.
As to Afghanistan/Pakistan, the root of our rightful concern after 9/11, Obama did what GWB never did...he took out Bin Laden. Once that area is stabilized, I hope...and believe...Obama will wind down that war as well. To do it right is taking longer than I would wish, but stabilizing Afghanistan/Pakistan (a nuclear power, BTW) is important to do. Otherwise, we'll be dealing with that problem again.
Finally, your link to an unjust war in VietNam with your title. I was against that war. Please remember, President Obama DID NOT start either the war in Iraq or the war in Afghanistan. He did not lie us into Iraq. He did not destabilize the ME. He is working to responsibly end both wars. Yes, it is taking too long IMO. But is it really futile to stabilize Afghanistan/Pakistan so that a nuclear incident...possibly terrorism related...is prevented? I think it is worth the effort.
And I will celebrate the day our troops come home.