'IOC has not done enough'

Tennis star Martina Navratilova and US basketball player Jason Collins said on Tuesday the International Olympic Committee has not done enough to defend the rights of gay athletes ahead of the 2014 Winter Olympics in Sochi, Russia.

Russia triggered angry criticism and even calls to boycott the Sochi Games when, in June, it banned spreading "gay propaganda" to minors. Critics denounced the law as discriminatory and a curb on rights to free speech and assembly.

Speaking at the United Nations to mark International Human Rights Day, Navratilova and Collins said focus should not just be on the Sochi Games, but also on the rights of gay Russians and on anti-gay laws in other countries that play host to global sporting events.