Qatar took the final step on Wednesday to start litigation at the World Trade Organization (WTO) in its row with the United Arab Emirates. However, no other WTO members supported its move, Reuters reported. The UAE and Saudi Arabia, Bahrain and Egypt earlier cut ties with Qatar, a major gas supplier. Doha pressed its case against the UAE alone, and last month it asked the WTO to set up an adjudication panel. The UAE plans to thwart the Qatari litigation by resorting to the WTO’s national security exception - something that’s never been tested as a defense in WTO litigation. Many trade experts see the case as setting a dangerous precedent.