UNITED NATIONS — U.N. Secretary-General Antonio Guterres has appealed to Israel’s government to retract a new law essentially banning the U.N. agency that assists Palestinians. The law goes into effect this week. “I regret this decision and request that the Government of Israel retract it,” Guterres wrote in a Monday letter to Israeli U.N. Ambassador Danny Danon that was obtained by VOA. The U.N. chief said the U.N. Relief and Works Agency for Palestine Refugees, or UNRWA as it is known, is irreplaceable and that no other organization has the capacity or mandate to do its work. On Oct. 28