Iraq's Umm Qasr commodities port near Basra has been blocked once again by anti-government protesters.
According to reports, the blockage will bring down operations by 50 per cent.
The port was previously blocked from October 29 to November 9, costing the country more than $6 billion.
It had briefly resumed operations between November 7-9.
Anti-government protests have left more than 300 people dead in Baghdad and southern Iraq since early October.


Fire in rebel-held east Congo kills 24 schoolchildren
Trump touts $5,000 payout if Republicans win as Vance waits in wings
Search expands after Philippine ferry fire kills five and leaves dozens missing
Trump says Iran war to end after US midterm elections
At least 20 killed in cargo vessel fire at China shipyard, state media reports
