During the interview process the candidate city must also guarantee that it can fund the Games.

Each candidate city was required to answer and 199-question questionnaire.

The file responded to 227 questions given to each candidate city.

All three candidate cities face major hurdles ahead of decision in seven months.

In another significant move today, the executive board cut the number of candidate cities for the 2008 Summer Games to 5 from 10.

They later made bids for the 2004 and 2012 Games, but failed to become a candidate city both times.

There are three candidate cities for the 2020 Summer Olympics.

During the interview process the candidate city must also guarantee that it will be able to fund the Games.

It bid again for 2004, which were held in Athens, but failed to become a candidate city.

Doha was, therefore, the only candidate city and it is relatively small in size.