EL AVIV—Israel on Monday began negotiations with several countries it hopes will take in Gazans as part of a mass emigration plan first proposed by President Donald Trump, two Israeli officials with knowledge of the talks told the Washington Free Beacon. Israeli prime minister Benjamin Netanyahu and strategic affairs minister Ron Dermer briefed the rest of the cabinet on the talks in a closed-door meeting on Saturday evening. The leaders said the talks were expected to continue for several days with the goal of securing commitments from the other countries to accept specific numbers of Gazan migrants in exchange for...