Today is 6th April, 73rd anniversary of the day Germany invaded Yugoslavia and destroyed the centralist country!
R.I.P 1st Yugoslavia
Yugoslavia existed until 2003 (even though it lost many areas in the Yugoslavian wars during the 90's) as far as I know?
that's why I said 1st Yugoslavia
the first Yugoslavia died on 6th April 1941.
the 2nd one (the communist one) was established after the end of WW2 and it lasted until 1991. when Croatia,Slovenia,Bosnia&Herzegovina,FYROM declared independence
Serbia and Montenegr where the only countries that remained in Yugoslavia and they held the name until as you said 2003 but the "real" Yugoslavia fell aparat when the war began in 1991
with Titos death there was no one able to hold all 5 nations in 1 country, when he died Serbian nationalists forces rised and tried to make Yugoslavia centralist as the 1st Yugoslavia was, other nations rebelled and artificial Yugoslavia fell apart
this is a good thing for everyone, I mean, uniting all slavic nations, really?
do you really want the slavic nations to unite with Russia one day?
because this is leading towards it