The United States noted the role of Saudi Arabia and the organizers of the Second Syrian Opposition Conference in Riyadh, calling the formation of the unified delegation of the Geneva talks a positive step, calling on the Syrian regime to enter into substantive negotiations in Geneva on the basis of Security Council resolution 2254. US State Department Spokeswoman Heather Nauert congratulated a new press release on Monday, the new negotiating committee and its general coordinator, Nasr Hariri, preparing to begin discussions that could eventually lead to a political solution to the conflict. "The United States has learned of the successful conclusion of the second Riyadh conference of the Syrian opposition and the conference has worked to bring together a variety of groups to form a unified delegation that can engage in substantive negotiations in the next round of UN-sponsored talks in Geneva," she said.