He said: “Europe should support Israel — not pressure Israel, not attack Israel, but support Israel, which is the only real shield that Europe and the Middle East have against extremist Islam, which is surging.”
Mr Netanyahu wanted to make explicit to Mr Cameron that the refugee surge and the war with Daesh were flip-sides of the same problem and needed to be dealt with at source in the Middle East.
Mr Netanyahu, who is travelling with his wife, Sara, was also expected to meet UK Jewish leaders, including the Board of Deputies, the Jewish Leadership Council and Bicom.
Mr Netanyahu is visiting the UK at a time when bilateral relations are extremely strong by historical standards. Mr Cameron gave a strikingly pro-Israel speech in the Knesset during a visit to Israel last year and Israel-UK trade reached £5.5 billion last year, up eight per cent on 2013.
Due to his tight schedule, the Israeli leader backed out of a planned meeting with business groups during his stay.