A question worth $ 680 mn: What did Anil Ambani know about the unpaid loan?

Anil Ambani, the younger brother of Asia’s richest man, faces a $680 million legal test to answer one and only one question: Just what did he know about what his employees were doing on his behalf? Other Indian tycoons will take an abiding interest in his defense.

The $680 million is the amount Industrial & Commercial Bank of China Ltd. is seeking to recover from the former Indian billionaire by invoking what they say is a personal guarantee he gave in 2012 to secure a $925 million loan for Reliance Communications Ltd., his mobile services firm that’s now in bankruptcy.