I'm not sure with regard to really different challenges. Definitely, it's a question of the layout of the offices. Some constraints have to do with offices, more specifically.
Communication is probably the key thing. One of our major problems in Africa, for instance, is communication with clients. In certain countries the mail system works very well; in some others it does not. We encourage offices as much as possible to use e-mail to communicate with clients more quickly, but not everybody has provided an e-mail address or has given us permission to use e-mail to communicate with them. So communication is probably one of the main things.
Reliability of documents is also key. If we get a certificate from the police from the U.K. and one from Bangladesh, we may not look at them the same way. We sometimes have to do more verification in certain countries than we do in others. In some countries, the document simply does not exist, so we have to look at other ways to find out the information required.