US President Donald Trump and his wife Melania at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/Flash90

US President Donald Trump with Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump boards the Air Force One, after an official state visit in Israel and the Palestinian territories, at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump and his wife Melania board the Air Force One, after an official state visit in Israel and the Palestinian territories, at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump and his wife Melania board the Air Force One, after an official state visit in Israel and the Palestinian territories, at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump and his wife Melania board the Air Force One, after an official state visit in Israel and the Palestinian territories, at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump and his wife Melania board the Air Force One, after an official state visit in Israel and the Palestinian territories, at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

Ivanka Trump and Jared Kushner at a farewell ceremony for US president Donald Trump at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump his wife Melania at a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump his wife Melania at a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump his wife Melania at a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump his wife Melania at a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump arrives to a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump arrives to a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

Israeli prime minister Benjamin Netanyahu and his wife Sara await the arrival of US President Donald Trump at a farewell ceremony in Trump's honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump his wife Melania at a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump his wife Melania at a farewell ceremony in their honour at the Ben Gurion International Airport in Tel Aviv on May 23, 2017. Photo by Miriam Alster/Flash90

US President Donald Trump at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump with Israeli President Reuven Rivlin and Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump with Israeli President Reuven Rivlin and Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump with Israeli President Reuven Rivlin and Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump with Israeli President Reuven Rivlin and Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump with Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump with Israeli President Reuven Rivlin and Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90

US President Donald Trump with Israeli President Reuven Rivlin and Israeli prime minister Benjamin Netanyahu at a welcoming ceremony for president Trump as he arrives at Ben Gurion Airport near Tel Aviv on May 22, 2017, for his first official visit to Israel since becoming US president. Photo by Miriam Alster/FLASH90