Bhishma accused of treachery (S22E04)

Bhishma feels remorse for having taken Yudhishthir captive. Duryodhan confronts him, branding him a traitor for his reluctance to slay Yudhishthir. Faced with his inner conflict, Bhishma resolves to abstain from the battle, unable to bring himself to harm the Pandavas. However, Duryodhan insists on reminding him of the vow he has sworn. What choice will Bhishma make in this critical moment?