Which statements about territorial sovereignty as following are correct?

A、Territorialsovereigntyhasapositiveandnegativeaspect;
B、Thepositiveaspectofterritorialsovereigntyrelatestotheexclusivityofthecompetenceofthestateregardingitsownterritory;
C、Thenegativeaspectofterritorialsovereigntyreferstotheobligationtoprotecttherightsofotherstates.;
D、Sovereigntyinrelationtoaportionofthesurfaceoftheglobeisthelegalconditionnecessaryfortheinclusionofsuchportionintheterritoryofanyparticularstate.