After prevaricating for four days, Prime Minister Manmohan Singh asked cabinet colleague Shibu Soren to resign because he was on the run dodging an arrest warrant. Soren retorted that if he was asked to resign, why should other chargesheeted ministers continue? The arrest drama has come to an end. The dispute remains. In Bangkok, the PM said criminality needs a precise definition. Does a minister become unacceptably tainted when probed, chargesheeted, arrested, has court charges framed against him, or is actually convicted by the court?