I can say that it was not in the nation's best interest to declare war. Firstly, in the 70s we as z country were going thru an oil crisis that was crippling our country and all of the industries, manufacturing and etc that kept the United States flowing. Secondly, the Saudis had political and trade problems with small skirmishes and had made getting oil from them not a particularly good option due to taxing. We had also had the problem of the Vietnam war to deal with as well. Lastly, the military did not have a good idea of what the terrain, military firepower and intelligence of the vietcong forces that had made they're terrain for use of gorilla tactics perfect for dealing crippling blows to our soldiers. Therefore if we had stayed out of the Vietnam War we might have kept enough resources to keep the United States flowing smoothly and avoided the oil crisis all together.
I'm not the only person who believes this but, your opinion is yours and I wont bash you for what you do and dont like about it. Use what you like out of this paragraph but keep it brief and to the point also dont forget to get sources no one likes plagiarism and wont tolerate it either, meaning they will kick you out of school.