If the sea route were cut off , Iraq could increase production through its pipeline from Kirkuk to Ceyhan and ship more oil aboard tanker trucks in the short term , he said . Iraq closes old pipelines , new projects in the Strait of Hormuz is closed . Oil provides more than 90 % of Iraq 's exports . About four - quarters of its exports go through the strait .
Iraq closes old pipelines , new projects in the Strait of Hormuz is closed . Oil provides more than 90 % of Iraq 's exports . About four - quarters of its exports go through the strait .