Brent dropped 34 cents, or 0.8%, to $41.43 a barrel, WTI fell 37 cents, or 0.9%, to $39.56 a barrel.

Russia has 36 nuclear power units in operation and three new ones under construction. In March, Russia's Ministry for Economic Development published a draft strategy for low-carbon development to 2050. The strategy's basic scenario would see nuclear output grow from 203 TWh in 2017 to 225 TWh in 2030 and 260 TWh in 2050. State nuclear corporation Rosatom's foreign orders include 36 units, which are at various stages of implementation.

UAE strategy targets an energy mix of 44% renewables, 38% gas, 12% clean coal, and 6% nuclear.

The OPEC+ agreement, along with declines in production elsewhere, including the United States, brought global supply lower than the level of global demand for the first time since mid-2019.

U.S. commercial crude oil inventories decreased by 1.6 million barrels to 494.4 million barrels,

Proponents of nuclear say as a low-carbon power source it could be vital in helping countries meet climate targets

Germany's law sets a legally binding target to achieve a carbon neutral power mix by 2050,

Dutch Ministry of Economic Affairs and Climate has just commissioned a study that argues that atomic energy can be a serious option in addition to wind and solar energy.

There has been international condemnation of Turkey's gas exploration offshore Cyprus,

Brent rose 23 cents or 0.6% to $41.95, WTI was up 13 cents or 0.3% at $39.93 a barrel.