How many Arabs are there in Israel? The latest publicly available brochure on ethnic distribution from Israeli Central Bureau of Statistics is for the year 2003. It shows 15.6% of Arabs are aged 0-4, and 9.1% of Jews are in the same age group.
In 2007, Jews were 5,470,000, and Arabs - 1,449,000. Accordingly, the number of Jews younger than five years is 5,470,000*9.1%=498,000; Arabs are 1,449,000*15.6%=226,000. In 18 years, therefore, Arab voters would be 226,000/498,000=45% the number of Jews.

There are also 4.4% of other peoples in Israel, or approximately 7,241,000*4.4%*9.1%=29,000 younger than five. That makes the Jews approximately 498,000/(498,000+226,000+29,000)=66% of Israel's young population. Jews already lost the supermajority status required for many legislative acts.

In truth, the ratio of Jews is much, much less. More than 300,000 Israelis registered as Jews are not Jews according to the traditional Jewish requirements. Unknown number of Israelis, estimated at 120,000 - 200,000 have only a Jewish grandmother which hardly makes them Jewish for practical purposes. Close to 900,000 Israelis live abroad, many of them counted as Jews in Israeli census as they keep visiting Israel once in a while. Therefore, the real number of Jews in Israel is 5,470,000-300,000-120,000-900,000=4,150,000. That makes the number of Jews younger than five 4,150,000*9.1%=378,000. Arabs of the same age constitute 226,000/378,000=60% of the number of Jews. Jews, realistically, constitute 378,000/(378,000+226,000+29,000)=60% among the Israel's young.

The trend toward emigration of young, productive Jews exacerbates the demographic problem. The number of Jews includes many questionable ones, such as non-halachic Jews by paternal lineage and 120,000 Black Christians and fake converts.

The Arabs form 226,000/(378,000+226,000+29,000)=36% of the Israelis. Arabs can count on other non-Jews, the 4.4%, in many policies. Arabs are also supported by ultra-left Jews who take 5-8% of the Knesset seats. In some situations, anti-Zionist ultra-Orthodox Jews would join them; that's another 200,000 voters, or 3%. At the very least, those Jews generally abstain from voting, deducting the 3% from Jewish electoral base. That already GUARANTEES Arabs the Knesset majority in 18 years.

Moreover, Arab political spectrum is united in its most important aspect, opposition to Israel's Jewishness. That situation won't change: naturally, Arabs prefer a Muslim or ethnic-blind state to a Jewish one. On the background of highly fragmented Jewish political parties, Arabs will reach decisive power in the Knesset long before they and their allies form the majority.

The bulk of young Jewish population is concentrated in Orthodox and ultra-Orthodox sectors; the birth rate of secular Jews hardly breaks even. Birth rate among moderately Orthodox Jews, usually identified as religious Zionists, rapidly declines as they integrate into secular culture. Ultra-Orthodox Jews maintain their high birth rate due to the isolation from secular developments, but for the same reason they remain underproductive (often unemployed), unwarlike (often shrinking from IDF conscription), and contempt of the existing Jewish state. In some important respects, therefore, young Jews are becoming as inimical to Israel as Arabs.

The concentration of new Jewish births among ultra-Orthodox makes the birth rate vulnerable to welfare policies. After the child allowances for large families were reduced, and, say, a 10-child family found itself receiving merely $700 of subsidies per month instead of the pre-2001 level of $1,600, ultra-Orthodox families appeared in dire poverty. In effect, the government cut the subsidies retroactively, as the cut affected the children who were given birth with the previous level of subsidies in mind. The unruly ultra-Orthodox community frightens the government with its religious zeal, and the government works to decimate the community. In response to diminished subsidies, ultra-Orthodox birth rate dropped sharply. Though the official statistics remains secret – itself a proof of the government's malign intent – published pieces of evidence, such as the drop from 8.9 to 7.7 children in Beitar Illit, suggest a fertility reduction of 10-13%. The previous subsidies were not high: $160 per child per month for ten-child family translated into the government's expenses of $31,000 before the child reaches 17 years. That price is a bargain compared to state's expenses for secular education. The reduction of child allowances disproportionally hurt the high-yield ultra-Orthodox community, and significantly diminishes Jewish birth rate.

Israel's Arabs were 150,000 in 1948. In sixty years, they bred to tenfold increase.

The last time Jews constituted only 60% of Israeli population was in 1947. We have fought and expelled the Arabs.