Oil prices climbed about 2 per cent to a one-month high on Tuesday after the US reportedly reimposed a naval blockade on Iran, which will reduce oil flows from the region through the Strait of Hormuz.
Brent futures rose by $1.43 or 1.7 per cent to settle at $84.73 per barrel, while the US West Texas Intermediate (WTI) crude increased by $1.20 or 1.5 per cent to $79.34 a barrel.
Brent closed at its highest since June 12, and WTI at its highest since June 15. The closing price increase kept Brent in technically overbought territory for a second day in a row for the first time since March.
Before the Iran war, about 20 per cent of global oil supplies flowed through the strait.
US President Donald Trump stepped back from a proposal to charge a 20 per cent fee to guard the Strait of Hormuz as part of the conflict with Iran, saying he would instead seek investment deals with Gulf states.
US forces had carried out waves of attacks for the third night after Iran said it had closed the strait. President Trump on Monday reinstated a blockade of Iranian shipping and proposed the fee, but hours before the fee was to take effect, the American President said the strait was open to all shipping traffic except that of Iran.
The renewed attacks have fed doubts that a memorandum of understanding signed last month will lead to a permanent halt in the war that has disrupted global energy supplies and stoked inflation fears.
Data showed that US consumer inflation slowed more than expected in June as energy prices retreated, but financial markets still expect an interest rate hike from the Federal Reserve.
The Federal Reserve Chairman Kevin Warsh on Tuesday vowed to “do my job” if challenged by President Trump, who has said he wants the US central bank to cut interest rates and boost economic growth.
The American Petroleum Institute (API) estimated that crude oil inventories in the US fell by 564,000 barrels in the week ending July 10. In the week prior, US crude oil inventories fell by 399,000 barrels.
Although commercial crude oil inventories excluding the SPR have been falling rapidly for three months now, shedding just over 60 million barrels over the last twelve weeks, US crude inventories are only down 9.2 million barrels so far this year. The US Energy Information Administration (EIA) will release its report later on Wednesday.

