It's not Judo , it's Brazilian Jiu Jitsu, it is derived from Judo but focuses largely on the ground portion Kesekatami

Well if it is martial arts, then Japan (Kendo, Karate, Judo, Jujitsu, and Aikido) is a winner becasue you don't need training but they might want graduates- but it is worth a look. You can earn up to around 2000 pound a month and if your careful, save half of that.

Do the job for a year and return with 12 000 and open a dojo and say (honestly) that you trained in Japan.

South Korea has taekwondo and Ssireum but has a few other styles too. Pays very well I hear.

China I am not familiar with as the situation there varies wildly from city to city and the place is changing rapidly.

Brazil is getting much better to work in.

Got a few links for you

www.teachermexconnect.com/south_america.html

for Brazil

And here are jobs board

International Jobs boards
www.tefl.com/jobs/search.html
www.eslcafe.com/joblist/

At the very least he can tell the folks at Job Seekers that he is applying

thanks Mickey