TEHRAN, Iran -- Iran's supreme leader has cautioned the country's government not to pin its hopes on Europe as Tehran's nuclear deal with world powers founders under U.S. pressure.

Ayatollah Ali Khamenei's website quoted him on Monday as saying the landmark 2015 nuclear deal "could not fix our economic problems."

Khamenei's comments come as the UN nuclear watchdog was expected to again announce that Iran is complying with the nuclear deal, which saw it limit its enrichment of uranium in exchange for the lifting of economic sanctions.

The U.S. and the European Union disagree over several issues, including Iran.

President Donald Trump pulled America out of the nuclear deal last year and re-imposed U.S. sanctions to pressure Tehran. Recently, France, Germany and Britain created a special trading arrangement to circumvent U.S. sanctions.