Costa Rica's Grynspan narrowly leads informal UN chief poll, sources say

An ​informal ‌poll by the United Nations Security ‌Council placed ‌former Costa Rican Vice President ⁠Rebeca ​Grynspan ⁠as the ⁠narrow frontrunner in ​the contest to ⁠become the ⁠next ​U.N. secretary-general, diplomats ⁠and other sources ⁠close to ⁠the process said.