Oil prices fell on Friday, coming off their biggest one-day gains in the previous session, after US President Donald Trump said he had brokered a deal between Saudi Arabia and Russia to cut output, but made no offer to reduce US production. Brent crude futures fell 3.27%, or 98 cents, to $28.96 per barrel as of 0335 GMT, after having soared 21% on Thursday. US West Texas Intermediate (WTI) crude futures fell 4.46%, or $1.13, to $24.19 a barrel, after having surged 24.7% on Thursday. Friday’s drop reflected market scepticism over whether a deal to call off the Saudi-Russian price war would go ahead if the US does not scales back output, and whether such a cut would be sufficient to balance the market in face of a deep economic recession caused by the coronavirus pandemic and draconian containment measures. Trump said the two countries could cut output by 10 to 15 million barrels per day (bpd) – an unprecedented amount representing 10% to 15% of global supply. Trump said he had made no offer to cut US output. Saudi Arabia called on Thursday for an emergency meeting of OPEC and non-OPEC oil producers, saying it aimed to reach a fair agreement to stabilize oil markets.