About that cartoon, Iraq isn't that similar to Viet Nam.
In Viet Nam American forces were sent into Viet Nam against the will of the leader who was assassinated by the CIA. These troops came to fight for the people against communists to the north. Even if all America really needed to do was provide arms and supplies and the ARVN would've taken care of the rest.
Kennedy was an arrogant POS.
In Iraq, America invaded Iraq and 'liberated' instead of 'protected'. In both cases the war didn't go as planned but GWB's war in Iraq is going substantially better than Kennedy's and Johnson's was in Viet Nam, ie: it's actually went somewhere. While the leader of Iraq obviously didn't will the American troops to invade, Americans didn't go in as defenders but as invaders/liberators.
At Viet Nam the VC and the NVA were fighting a lot more dedicatedly than in Iraq. As you can all tell by the fact that Viet Nam comprised of 20-25 years worth of constant harrassment to all out battles resulting in massive casualties for both sides. Though the forces in Iraq are suffering many casualties, they are not suffering nearly as many and have won the 'war' in a much much shorter time.
This may be because the landscape of Viet Nam lends itself to ambushes and fierce close fighting with little short guys with AKs jumping out of every friggin hole and dissappearing after a 30 rnd burst but even then, the Viet Namese would not have just deserted their bases and leave all their tanks.
I just realized that most of what I just said really has little relevancies but oh well, I'll sum up what my original point was:
-Iraq and Viet Nam are too very different war
*Bush came in as a preemptive strike against possible WMD strikes
*Kennedy went in to stop the spread of communism
*This war is short
*Viet Nam was long
*Viet Namese needed the help of America but didn't get it (instead troops came in to take over the entire war effort)
*Iraquis need help in rebuilding infrastructure and America is trying to get that through
*In Viet Nam America withdrew all support at a random moment leaving ARVN with no hope in defeating the NVA
*in Iraq America is still there at a critical time NOT withdrawing from an onslaught of terrorists
-Similarities are the following that I see:
*both times there was little support or divided support
*both times the war was started by a president who didn't foresee the consequences
While there are probably a lot more similarites, all wars have similarities. Viet Nam is very unlike Iraq for reasons stated. And most obviously, the opposing army has been defeated in Iraq. All that remains is an unofficial force conducting guerilla warfare strikes on Coalition forces that have a presence in the entire country.