Resolved: President Obama's plan for increasing troops in Afghanistan is in the U.S.' best interest

I will now refute my opponents contentions and strengthen mine. Contention One- The war in Afghanistan is clearly unconstitutional. My opponents fails to make any connection why this isn't in our best interests and the part of the constitution he posted doesn't say anything about anything relevant other than states cannot invade unless attacked upon. We are fighting this war as a whole united country not as states. And Congress did consent for the war along when in consented for the Iraq War. What Ron Paul said wasn't a law. It was a protocol that was discontinued since war with its surprising outcomes didn't allow us to with one plan and many times we didn't know who we were fighting. Now I have refuted their 1st contention. Now going on to their 2nd contention. Contention Two- The addition of 30,000 troops does not make sense. This fully makes sense because my opponent is focusing on how that this isn't needed for only a 100 al queada operatives. This isn't only al Quadea we are fighting now as my opponent say this focuses on them going to Afghan not going to fight a specific enemy. The reason the troops are being sent is to protect Afghanistan from becoming a base to the al-quadea and for the Taliban to regain control of Afghan so that we can stabilize Afghanistan once and for all and not worry about the birth of another terrorist group or about Afghan using as meeting place for planning terrorist attack. Having refuted my opponents 2nd contention I shall move to the 3rd. Contention III- We should be retreating out of Afghanistan like the Soviets did in the 1980's. This makes no sense as my opponent doesn't a give a reason other than it happened to the Soviets. The Soviets were doing this for their own self interest not to create a stable government and the were also against us the US at the time when we were supplying the Mujahadeen with weapons to fight of the communists because we were afraid of communism at the time. We will not lose in Afghanistan because we have 50+ nations helping us and we are just trying to create a new government for the Afghan neither of what the Soviets had. I have now refuted my opponents 3rd and last contention. I shall now go to my own contention. CONTENTION 1: Success In Afghanistan Is In The United States' Best Interest. My opponent says just because their are only 100 terrorist left we should not worry and we should not increase troops. This isn't just about al-quada any more we are sending the troops so that we may set things right for the final push toward afghan stability. For the source I used an older version of my sources wit ha newer version of my case so the fault is mine so here is the right one http://www.heritage.org.... Now that I have successfully defended my 1st contention I will move onto the second one. Contention 2 : Under The Obama Plan The Generals Will Have Sufficient Troops to win the war. We aren't just going for Al-Quadea as I have stated numerous times before we are protecting the government so it can stabilize itself. This country is in a severe need of troops and if we don't do this it threatens virtually every countries security interest including ours therefore it is in our best interest. My opponent them self said it is going to take 800 to 900 billion for a war of 8 years but by having this troop increase we will be able to end it in 4 years maximum thus bringing the war debt to 430 billion over 900 billion. Therefore the troop increase is in our best interests. For the following reasons I urge a affirmative side.