Answer: theun

AnswerCrossword Clue
THEUNCountry club?: Abbr.
THEUNLandmark on First Ave.
THEUNLandmark along First Ave.
THEUNAnnan's bailiwick
THEUNIt's led by a Sec'y-General
THEUNBan Ki-moon heads it, for short
THEUNSecretariat's org.
THEUNHuman Development Report publisher, in brief
THEUNOne of its official languages is Eng.
THEUNN.Y.C. landmark
THEUNOrg. headquartered on N.Y.C.'s First Avenue
THEUNKofi Annan's bailiwick
THEUNIt originally included 51 states
THEUNNYC landmark on First Ave.
THEUNDiplomatic HQ in NYC
THEUNNYC landmark
THEUNRice is often found there
THEUNOct. 24th honoree
THEUNOrg. with HQ on Manhattan's East Side
THEUNPeacekeepers' org., familiarly
THEUN51 countries founded it
THEUNN.Y.C.-based country club?
THEUNN.Y.C. country club?
THEUNBan Ki-moon's org.
THEUNN.Y.C.-based org.
THEUNCountry club?
THEUN2001 Peace Nobelist org.