An interesting article I found here. The article states some reasons why USA supports Israel, which has been a major cause of world’s problem. Before reading this you should know that Protestants consist of 52% (Nation Master) of the population of USA. They constitute the biggest voting block in the USA. No political candidate can get elected if the Fundamentalist Christians are opposed. They are those who believe in the exact words of the Bible.
Now, the key question is: Why do the Fundamentalist Christians support Israel?
Fundamentalist Christians believe that every word of the Bible is true. Their support for Israel comes directly from the Bible. Most importantly, it comes from the Book of Revelation, the last book of the Bible, chapters 16 to 21.
According to the Bible and the Book of Revelation, chapters 16-21, in order for the Second Coming of Christ to occur, several things must happen. First, the Jews must return to Jerusalem. That has already happened. Then, there will be a series of catastrophic events. The moon will turn to blood. Next, there will be a major battle known as the Battle of Armageddon. Satan will declare war on Jerusalem. He will effect it through the Anti-Christ. The Bible states that part of Jerusalem will be destroyed and pillaged. It also states that when all appears hopeless for the Jews, the Second Coming of Christ will occur. From the ruins a new Jerusalem will arise and all the remaining Jews who were not killed in the Battle of Armageddon will convert to Christianity.
These events all depend on one thing: The Jews must be in control of Jerusalem. The Biblical account of The Battle of Armageddon describes the Jews as bring in Jerusalem. Therefore, if the Jews do not control Jerusalem, Battle of Armageddon and thereafter the Second Coming of Christ cannot occur.
Another Perspective on this here
U.S. support of Israel is both historical and consistent. While there are many reasons for that support, it is primarily founded upon U.S. geopolitical interests. The state of Israel is an isolated country heavily dependent on the United States for its survival. This dependence allows Washington to use the country to further its interests in the Middle East — interests such as preventing any independent Middle Eastern power from becoming a regional hegemon.
This question has troubled me for quite a while and I believe I may have found a satifactory answer to it.