Under the agreement with the Cambodian government that established the tribunal, the U.N. pays the salaries of the foreign staff, while it is the Cambodian government's responsibility to pay Cambodian employees. In reality, international donors have often supplemented Cambodia's inadequate contributions.
The Cambodian section of the court currently faces a $3 million shortfall for its operations, including wages, from June through the end of the year.
"Prime Minister Hun Sen has spent years obstructing the trials of former Khmer Rouge leaders, but donors to the court have played along and continued to subsidize a seriously compromised court," Adams said. "Donors should finally call his bluff and withhold future contributions until the Cambodian government pays its agreed share of the costs of holding the Khmer Rouge accountable."
David Scheffer, a U.N Ambassador for the tribunal, said in a statement sent to The Associated Press on Thursday that the U.N. has pressed Cambodia "repeatedly to step up to its legal obligation so as to avoid such crises."
Scheffer also urged the court's local staff to remain patient "as we urgently continue with our efforts" to find a resolution.
At least 134 of the court's Cambodian employees, including interpreters and translators, went on strike Monday to demand wages that have not been paid since June.
The court is currently trying two Khmer Rouge leaders, former head of state Khieu Samphan, 82, and chief ideologue Nuon Chea, 87, for crimes against humanity, war crimes, genocide and other offenses. Ieng Sary, another defendant, died in March during the trial.
The defendants' advanced age and poor health, as well as budgetary shortfalls, have raised concerns the trial may grind to a halt before a verdict is reached. The court, which began in 2006, so far has convicted only one defendant, Khmer Rouge prison director Kaing Guek Eav, who was sentenced to life imprisonment.