The IEA cut its 2026 oil demand forecast by another 940 kb/d in a single month

On annual averages, the IEA has demand falling 2.5 mb/d this year and recovering 2.6 mb/d next, a net gain of 100 kb/d across the two years ^[1][3][1]. Supply falls 5.7 mb/d and then rebounds 8 mb/d, a net gain of 2.3 mb/d ^[5][6][2]. The spread between those two paths is 2.2 mb/d ^[3]. That is the agency's own 2027 forecast, and it describes a deferral that ends loose. The 2026 demand line is also the least settled number in the report: it moved 940 kb/d in a month, or 38% of the 2.5 mb/d decline it now describes ^[1][4].

The product market is where the money sits. US diesel passed $200/bbl in early September while ICE Brent traded at $105, up $21 since the start of August ^[16][15], a gross spread near $95/bbl between a crude future and a product benchmark ^[5]. Work the pre-war premiums backwards and Brent was about $72, US diesel about $103 ^[6][7], a spread near $31 ^[8]. The demand the IEA is writing down is the same barrel: middle distillates and petrochemical feedstock, concentrated in Asia ^[2].

Gulf net diesel and gasoil exports averaged 390 kb/d in August, just over a quarter of pre-war, which implies a pre-war rate near 1.5 mb/d and a loss around 1.1 mb/d ^[19][10]. Gulf and Russian net diesel exports together were 1.6 mb/d below February, leaving roughly 0.5 mb/d, about a third of the total, with Russia ^[21][11]. Russia's share follows a damaged refining system and a near-halt in product exports after intensified Ukrainian attacks ^[20]. In February the two supplied almost 45% of global seaborne diesel and gasoil trade ^[21].

Crude is repairing faster than product. Gulf crude losses have narrowed to just below 45%, helped by cargoes bypassing the Strait and US military escorts through Hormuz, with total Gulf oil exports around 13 mb/d in August, nearly half pre-war ^[17]. Refined product and LPG exports are still nearly 60%, or 3.7 mb/d, under February ^[18]. Slack elsewhere is thin. August's 81.4 mb/d summer peak in refinery runs sat 100 kb/d below the 81.5 mb/d the IEA expects the year to average ^[8][9][12].

If Washington and Tehran settle, the shut-in barrels return and flat price retraces toward the $72 implied by Brent's 45% premium ^[6], with cracks compressing ahead of it. If crude normalises while products lag, the escorts moving crude through Hormuz do nothing for Russian refinery repair ^[17][20]. The third path is the restock: buying back the inventory drawn since February absorbs part of the 8 mb/d 2027 rebound ^[11][6]. I'd weight the second. August's draw ran at roughly 3.1 mb/d against a 2.8 mb/d six-month average ^[9], and oil on water fell 65 mb as tankers leaving the Middle East came under renewed attack ^[12]. Gulf net diesel exports climbing back toward 1.5 mb/d while the spread holds near $95/bbl would put the constraint in shipping and prove that reading wrong ^[10][5].