Why they are so angry that their candidate lost elections in Ukraine, why they supporting separatists and de facto occupying Georgian and Moldovian territories?==
You mixed 2 problem as one quetion.
As far as I know no one angry on result of election in Ukraine. Don't you notice where Yuschenko went in his first time foreign visit as president? Moscow.
Russia don't support separatists.
Accually in Georgia live different ethnicity, name: abhazi. They never have been as part of Georgia. Stalin made them in 1930th. SO they proclaimed themselves free.
In 1993 georgians attacked them and war began. Russia wan't involved.
All abhazian people went to war and won over Georgia. Accualy it was Russia who saved Shevarnadze who personally commanded georgians from abhazi encirlement.
Today abhazies simply loathe georgians.
So it is just one of local wars when one ethnicity got free from bigger.
If you are for freedom then you may support abhazies.
Moldavia is same thing. Dnestri republic are populated by nonmoldavians. SO they break free form them. It was moldavians who started local war in 1992(?).
All population took arms and drove moldavians back. They loathe moldavian ever since.
Russia hold huge soviet time weaponry depots there. It is all from Russia involvement. Dnestri republic doesn't allow Russia to evacuate those depots until there no peace treatyu with Moldavia.
FYI Ukraine plays bigger role there. Since it is thier border and population of Dnestri republic connected with Ukraine. Ukranian nationalists fought moldavians in 1992 on side of Dnestri republic.
You mean like Stalin gave Chechnya to Chechens? Should Chechnya be allowed to "proclaim themselves free?"
It is the height of hypocrisy for Russians to lament support of the Chechens when they themselves support separatists in Georgia. The butcher of Beslan Basayev even supported the Russian war on Georgia. He beheaded Christians in Abkhazia in the early nineties for his jihad. I don't support Chechens because I wouldn't want Russia to support separatist rebels in the USA. When you support the Abkhaz, you undermine the effort in Chechnya.