Emergency personnel work at the site of a strike on a residential building, amid the U.S.-Israeli conflict with Iran, in Tehran, Iran, March 16, 2026. Majid Asgaripour/WANA (West Asia News Agency) via REUTERS

LONDON, March 24 (Reuters) – The Iran war, now in its fourth week, is creating a major crisis in energy supplies that is impacting every corner of the global economy. But it is already clear that some countries are either more exposed to that impact or less able to deal with it.