Virtue was destroyed by the wicked souls (the Kuru princes) with Subala's son (Shakuni) at their head when your sons invited the virtuous Yudhishthira to play and defeated him at dice.
स वैधर्मो विप्रलब्धः सभायां पापात्मभिः सौबलेयप्रधानैः। आहूय कुन्तीसुतमक्षवत्यां पराजैषीत् सत्यसंधं सुतस्ते॥