Former International Cricket Council anti-corruption chief Lord Condon has said that countries that fail to control their players should be banned from the sport.
"The ICC has to give out the harshest sentences it can," Condon told BBC Sport.
"The nuclear option is banning boards from international cricket.
"The ICC must get tougher. This is a big wake-up call. Cricket is at a credibility crossroads."
Three of Pakistan's players have recently been jailed for conspiracy to cheat.
Salman Butt received a 30-month sentence while bowlers Mohammad Asif and Mohammad Amir were condemned to a year and six months respectively.
"They deserved the sentences they got," Condon added.
