Prime Minister Shinzo Abe says he will never yield to terrorists as ransom is demanded for Japanese captives. Presenter: Sami Zeidan

Guests:

Matthew Henman - counter-terrorism expert and manager at IHS Jane's Terrorism and Insurgency Centre

Tomohiko Taniguchi - adviser to the cabinet of Prime Minister Shinzo Abe

Richard Weitz - political and military analyst from the Hudson Institute