Ammon News - Oil prices rose by about $1 a barrel on Thursday after a U.S. court blocked most of President Donald Trump's tariffs, while the market was watching out for potential new U.S. sanctions curbing Russian crude flows and an OPEC+ decision on hiking output in July.

Brent crude futures climbed $1.03, or 1.6%, to $65.93 a barrel. U.S. West Texas Intermediate crude advanced by $1.06, or 1.7%, to $62.90 a barrel at 0630 GMT.

A U.S. trade court on Wednesday ruled that Trump overstepped his authority by imposing across-the-board duties on imports from U.S. trading partners. The court was not asked to address some industry-specific tariffs Trump has issued on automobiles, steel and aluminium using a different statute.

On the oil supply front, there are concerns about potential new sanctions on Russian crude. At the same time, the Organization of the Petroleum Exporting Countries and allies, together called OPEC+, could agree on Saturday to accelerate oil production hikes in July. Reuters