From BBC News
Often labelled an ultra-nationalist (he has described himself as "more right-wing" than Mr Netanyahu), Naftali Bennett is outspoken in his advocacy of Israel as the Jewish nation state and Jewish historical and religious claims to the West Bank, East Jerusalem and the Syrian Golan Heights - territory occupied by Israel since the 1967 Middle East war.
He has long championed the right of Jewish settlement in the West Bank (he was once the head of the Yesha Council, the political representative group for Jewish settlers), although he has said Israel has no claims on Gaza (from which Israel withdrew troops and settlers in 2005). More than 600,000 Jews live in about 140 settlements in the West Bank and East Jerusalem, considered illegal by almost the entire international community, though Israel disputes this.
The fate of the settlements is one of the most contentious issues between Israel and the Palestinians, who seek their removal and the establishment of an independent state in the West Bank and Gaza, with East Jerusalem as its capital. Interfering in, let alone halting, settlement activity is anathema to Mr Bennett, who considered the pro-settlement Mr Netanyahu as untrustworthy on the issue.