Iraq crisis: What will happen to oil prices?
16 June 2014 Last updated at 15:45 BST
Oil prices could "head quite a bit higher" if the situation in Iraq is not resolved, an analyst has claimed.
Militants led by ISIS - the Islamic State in Iraq and the Levant - captured key cities including Mosul and Tikrit last week.
Amrita Sen, Chief Oil Analyst Energy Aspects, told BBC Radio 5 live's Wake Up to Money that "fault lines" which opened up between regional powers during the crisis could hamper oil production.