There are two worlds in Israel. That of the secular Tel Aviv, where you have progressive politics, one of the worlds largest gay community's, etc. and that of the settlements, and the Orthodox, who are having more children!
Reform Judaism does not exist in Israel. You are either Orthodox, or secular, nothing in between like the United States or the West, but it is changing. Reform movements are growing in Israel.
But the bottom line is, that the orthodox are having huge families, and breeding many orthodox children, to replace them, and some.
You can find good articles on the tensions between the two, and what I mentioned on HaAretz, Israel's liberal newspaper:
· 6 years ago