Saudi Arabia will adhere strictly to its commitment to cut output under the global agreement among oil producers, its energy minister said on Monday, expressing confidence that OPEC's plan to prop up prices would work. Saudi Energy Minister Khalid al-Falih, speaking at an industry event in Abu Dhabi, also said he was encouraged by signs of commitments by other participants in the deal since it took effect on Jan. 1. Compliance with the deal will be a key influence in early 2017 on oil prices , which at $56 a barrel are about half their level of mid-2014.