Oil prices have increased today in Asian markets, driven by the diplomatic impasse in the Middle East after the rejection by President Donald Trump of a plan presented by Tehran for the reopening of the Strait of Ormuz.
© Reuters
28/09/2026
by
Lusa
A6:15 a.m., the price of the North Sea Brent barrel, the world market reference, rose 3% to $107.45.
The U.S. WTI barrel rose by 1.98% to $94.24.
“ Tensions in the Middle East remain, in the absence of a clear resolution to the disturbances around the Strait of Ormuz and in the face of uncertainty about the normalisation of oil supply,” said Lloyd Chan, an analyst consulted by Bloomberg.
On Saturday, President Donald Trump announced the rejection of a plan formulated by Tehran to reopen the Strait of Ormuz within seven days.
Navigation in the Strait of Ormuz, where one fifth of the world's hydrocarbons were normally transiting, remains largely paralysed: the Islamic Republic claims control of the region, while Washington imposes a blockade on Iranian ports.
Iran said it was waiting for a definitive response from Washington to decide “the next steps”.

