Oil markets are tightening at the start of the second quarter amid a flurry of intensifying risk indicators, the International Energy Agency (IEA) said Thursday. In any case, the gathering cautioned a "extraordinarily" wide scope of perspectives about the health of the worldwide economy was making it hard to forecast oil prices. It comes when energy market members are concerned surging U.S. crude stockpiles and an economic slowdown could soon dent fuel consumption. Be that as it may, worldwide oil markets stay firm, in the midst of OPEC-drove supply cuts, U.S. endorses on oil exporters Venezuela and Iran and escalating fighting in Libya. “The huge increase in oil production we saw in the second half of 2018 has reversed following the implementation of the new Vienna Agreement and the increasing effectiveness of sanctions against Iran and Venezuela,” the Paris-based IEA said Thursday. “This turnaround in supply has contributed to a dramatic increase in prices, with Brent crude rising from $50 a barrel at the end of December to more than $70 a barrel today.” International benchmark Brent crude traded at around $71.21 Thursday morning, down 0.7 percent, while U.S. West Texas Intermediate (WTI) remained at $63.95, around 1 percent lower. Brent and WTI rough prospects have ascended by around 30 and 40 percent separately since the beginning of the year. “In a world where we saw Brent at $86 a barrel in October, $50 a barrel in December and now back to over $70, I think it is a very brave person that attempts to forecast what the price will be at the end of the year,” Neil Atkinson, head of the oil industry and markets division at the IEA, told CNBC’s “Street Signs” on Thursday. The current year's oil value rally has incited President Donald Trump to approach OPEC to hike output and tamp down prices. The producer group has so far ignored Trump’s warnings. OPEC, alongside Russia and other non-member countries, is endeavoring to keep 1.2 million barrels for each day (b/d) off the market through June, following a breakdown in crude prices at the end of 2018. The production curbs, now and then alluded to as the Vienna agreement, mean to empty oversupply out of the oil market and boost prices. OPEC+ collusion individuals will meet in June to talk about oil strategy. Saudi Arabia is inclining toward continuing the production cuts into the second 50% of 2019, while Russia fuses to commit to an extension. “As far as 2019 is concerned, amongst the analyst community there is an extraordinarily wide divergence of view as to how strong growth will be,” the IEA said. “We maintain our forecast of 1.4 million barrels per day, but accept that there are mixed signals about the health of the global economy, and differing views about the likely level of oil prices,” the group added. OPEC’s oil production plunges A few investors are stressed an economic over the coming months will before long begin to altogether imprint fuel demand. Prior this week, the International Monetary Fund (IMF) minimized its worldwide development estimate to the least dimension in 10 years. The IEA reaffirmed its assessments for worldwide oil request development in 2018 and 2019 at 1.3 million b/d and 1.4 million b/d, separately. On Thursday, oil supplies from OPEC sank considerably a million barrels every day in March, hitting a four-year low, as Saudi Arabia kept on cutting yield and Venezuela's production plunged amid ongoing economic crisis. The monthly production decline amounts to roughly half a percent of global oil demand. The drop is greater than the total monthly output of four of OPEC’s 14 members.