Not wanting to start another argument I would like to relate a personal experience...
The evangelical Christians do support Israel, but I suggest that there are many of them who expect us to accept their messiah as a pre-requist to solving our national problems. I had a 2 hour argument on Youtube with one such evangelical Christian who wanted to convince me that accepting their messiah is the only way to cause the state of Israel to be saved. I realize this is what many of them believe, and I said to the woman who was arguing with me that I had no desire to dampen her spirit but it is wrong to attempt to convert Jews who have faith in Hashem.