Zebra

I am setting up a Credit Card billing page and am trying to figure out which countries to allow Credit Card charges from and which ones to block.
Anyone know of any that I should add to my list to allow and which ones I should remove and block?

Here is my current list that I am allowing CC transactions from:
American Samoa
Antigua and Barbuda
Argentina
Aruba
Australia
Austria
Bahamas
Barbados
Belarus
Belgium
Belize
Bermuda
Brazil
British Virgin Islands
Canada
Cayman Islands
China
Costa Rica
Denmark
Dominican Republic
Estonia
Fiji
Finland
France
France, Metropolitan
Germany
Gibraltar
Greece
Greenland
Guam
Hong Kong
Hungary
Iceland
India
Ireland
Israel
Italy
Jamaica
Japan
Liechtenstein
Luxembourg
Malta
Martinique
Mexico
Monaco
Montserrat
Netherlands
Netherlands Antilles
New Zealand
Norway
Panama
Philippines
Poland
Portugal
Puerto Rico
Romania
Russian Federation
Saint Lucia
Samoa
South Africa
Spain
St. Kitts and Nevis
St. Vincent and the Grenadines
Sweden
Switzerland
Taiwan
Trinidad and Tobago
Turkey
United Kingdom (Great Britain)
United States
United States Virgin Islands

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