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??: ???????     ??: 2019-09-20 03:40:44
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U.S.PresidentDonaldTrumpstepsintotheDPRKwithitstopleader,KimJong-un,inPanmunjomvillageintheDemilitarizedZoneonSunday.(Photo/Xinhua)Withsmilesandhandshakes,athirdmeetingbetweenU.S.PresidentDonaldTrumpandDPRKtopleaderKimJong-ununfoldedattheKoreanbordervillageofPanmunjomintheDemilitarizedZoneonSunday,raisinghopesforarevivalofstallednucleartalks.Trump,escortedbyKim,brieflycrossedthemilitarydemarcationlinebetweentheDemocraticPeople'sRepublicofKoreaandtheRepublicofKoreaonSundayafternoon,ontoDPRKsoil,becomingthefirstsittingU.S.presidenttosetfootinthecountry.Afterexchanginghandshakesandafewwords,thetwoleaderssteppedbacktotheROKsideofthevillageandmetwithROKPresidentMoonJae-in,beforegoingintoone-on-onetalksbehindcloseddoorsattheFreedomHouseonthesouthernsideofPanmunjom.Trump,whoisonatwo-dayvisittotheROKthatstartedonSaturday,extendedanimpromptuinvitationtotheDPRKleaderonFridayviaTwittertocometotheDMZ"justtoshakehishandandsayHello".TheAssociatedPresssaidthatKimacceptedTrump'sinvitationatnoononSunday.DescribinghismeetingwithKimas"aspecialmoment",Trumptoutedtheir"greatrelationship".Kimsaidtheir"handshakeofpeace"inalocationthatwas"thesymbolofthedivision"showedthat"wearewillingtoputthepastbehindus".Askedbyareporterifhe'swillingtoinviteKimtotheWhiteHouse,Trumpsaid,"IwouldinvitehimrightnowtotheWhiteHouse."Thesnapencountermarkedthethirdtimethetwohavemet.TheymetforthefirsttimeinSingaporeinJunelastyearandagreedtoimproverelationsandworktowardthedenuclearizationoftheKoreanPeninsula.Buttherehasbeenlittleprogresssincethen.Thesecondsummit,inHanoi,Vietnam,inFebruary,brokedownwhenthetwosidesfailedtonarrowdifferencesbetweenWashington'sdemandforPyongyangtogiveupitsnuclearweaponsandPyongyang'sdemandforsanctionsrelief.TengJianqun,directoroftheChinaInstituteofInternationalStudies'departmentforU.S.studies,saidtheDMZmeetingbetweenthetwoleadersis"symbolicandmeaningful",asitreaffirmedtheircommitmenttodenuclearizationandthepeaceprocessontheKoreanPeninsula,althoughdetailswilllikelybediscussedinfutureworking-leveldialogues."EventhoughthemeetingattheDMZwasshort,itsurelyhascreatedanimportantwatershedmomentineasingtensionsontheKoreanPeninsula,"Tengsaid,addingthatitappearstobehardforthetwocountriestoresolvetheirdifferencesrightaway.InanewsconferenceafterhissummitwithMoononSunday,Trumpstressedagainthatheis"innorush"indenuclearizationtalkswithPyongyangandthatthe"sanctionsarestillon"againstPyongyang.GuoRui,aprofessorofinternationalrelationsatJilinUniversity,said,"AlthoughtheDMZmeetinghascreatedsignificantmomentumthatwillhelprestartachangeontheKoreanPeninsula,assanctionswillremaininplace,chancesarenothighthatthemeetingwillleadtoamajorchangeintheshort-termtrajectoryofdenuclearizingthepeninsula."GlobaleffortaimstofinddiseasevectorsthatcanjumpfromanimalstohumansChinawillhelpleadaprojecttoidentifyunknownvirusesfromwildlifetobetterpreparehumansformajorepidemics?-?ifnotglobalpandemics.Theprojectistobelaunchedthisyear,accordingtooneofthecountry'stophealthofficials.TheGlobalViromeProjectwillstartinChinaandThailandwithfieldworktocollectsamplesfromwildanimalsandanalyzethevirusesdetected,saidGaoFu,headoftheChineseCenterforDiseaseControlandPrevention."Scientistswillcollectvirussamplesfromanimalssuchasbatsandratsforstudyusingtechniqueslikenextgeneration(DNA)sequencingtofindwhethernewvirusesexist,"hesaid.Theproject,estimatedtocostupto.2billion,isexpectedtotake10yearsandinvolvesmanycountriesincludingtheUnitedStates,BrazilandNigeria.Throughmoreintensiveandextensivestudyofvirusesfromanimalsthatcouldinfecthumans,itmaybepossibletodealwithvirusesusingpreemptivecontrolsandpreventioninsteadofpassive,reactivemeasures,Gaosaid."Weallknowtherearealmostcertainlynewvirusesthatcouldcausethenextglobalpandemic,butbasedontheexistingearlywarningcapacityfordiseases,wedonotknow,forexample,whichviruswillcauseanepidemic,"Gaosaid."Wearesurethatnewvirusstrainswillappearinthefuturealongwithchangesinourecology,environmentandhumanbehaviors."Forinstance,humans'abuseofantibioticshasleadtothepotentialdevelopmentofsuperbugs."Therearemanyviruseslivinginwildanimals,sowecanidentifyvirusesandthoroughlystudythosethatcouldpasstohumans,"Gaosaid."Ideallywecandevelopvaccinesandadiagnosisforsuchvirusesevenbeforetheycausehumanepidemics."Itisknownthat263virusescaninfecthumans,butscientistsestimatetheremaybemorethanhalfamillionvirusesthatliveinbirdsandmammalsandthatareunknowntohumansthatmaybecapableofinfectinghumans,andtheyaretheprimarysubjectoftheproject'sresearch,Gaosaid.Evenifalargenumberofsuchunknownvirusesareidentified,itispossiblethatjustasmallfractionofthemhavetheabilitytocausemajorepidemicsthatcausehumandeaths,hesaid.However,consideringthehugecostofamajorepidemiclikeSARStohumanhealthandeconomies,thefindingsoftheprojectstillhavethepotentialtogreatlyreducelossesthroughimprovedearlydiagnosisandidentificationofhostsvulnerabletoanewvirusafteranoutbreak,accordingtoGao.AsimilarprojectcarriedoutbytheUSAgencyforInternationalDevelopmentprovedthefeasibilityoftheGlobalViromeProjectandprovideshelpfulexperience,hesaid.TheUSAIDproject,knownasPredictandlaunchedin2009,withChinaaparticipant,ledtofindingsofmorethan1,000virusespreviouslyunknowntohumans.Theprojectcostwasover0million,hesaid.SomeofthetechnologiesusedforthatprojecthaveprovedreliableandeconomicallyaffordableandcanbeusedfortheGlobalViromeProject,Gaosaid.? 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