Oil prices soared to their highest since 2008 due to delays in the potential return of Iranian crude to global markets and as the United States and European allies consider banning imports of Russian oil.
Talks to revive Iran’s 2015 nuclear deal with world powers were mired in uncertainty on Sunday following Russia’s demands for a U.S. guarantee that the sanctions it faces over the Ukraine conflict will not hurt its trade with Tehran. China has also raised new demands, according to sources.
By Scot Disavino for Reuters
