As the conflict in the Middle East drags on, Singapore along with the rest of the world, is feeling the strain: rising oil prices, disrupted supply chains and deepening uncertainty. Singapore has long prided itself on being principled, following the rules of the global order. But in a changing new world, how long can a small nation hold that line? Steven Chia and Tiffany Ang speak with Minister of State for Foreign Affairs Zhulkarnain Abdul Rahim on why this issue poses an existential challenge