http://www.london2012.com/about-this-website/ticketing-website-checker.php in case my word is not enough that you know **** all.
Suseia is an Authorised Olympic Ticket Reseller for the following countries only: Turkmenistan and The Former Yugoslav Republic of Macedonia. The official ticketing site for residents of the UK and designated European countries*is www.tickets.london2012.com Individuals from outside the UK and designated European countries should see our list of official suppliers
Also the authorised seller of Belgium if you check the NOC authorised sellers on the website. As an EU national you are eligible to buy from them, its EU law
If you register you can see the tickets which are available. Pretty much mainly just boxing now, although if Judo, Wrestling and Archery are your things then knock yourself out. http://www.bbc.co.uk/sport/0/olympics/17518406 Read that article, it mentions about getting tickets from abroad.
I bought tickets for the quarter finals from a German website: http://www.dertour.de/olympia-2012/tickets-buchen.html