Oil prices rose 3% on Wednesday as Iran suspended cooperation with the U.N. nuclear watchdog and the U.S. and Vietnam reached a trade deal, but a surprise build in U.S. crude supplies limited price gains somewhat.

Iranian President Masoud Pezeshkian has approved a law to halt cooperation with the International Atomic Energy Agency (IAEA), a move which will likely obscure any attempt by Tehran to restart its damaged nuclear program.

Iran’s president has ordered the country to suspend its cooperation with the International Atomic Energy Agency after American airstrikes hit its most-important nuclear facilities.