Under the 2015 accord, Tehran agreed to limit enrichment of uranium to levels necessary for nuclear power in exchange for the lifting of economic sanctions.

North Korea has a history of testing new U.S. administrations with missile launches and other provocations aimed at forcing the Americans back to the negotiating table.

The United States on Sunday imposed sanctions against 11 individuals and entities involved in Iran's ballistic missile program as a result of Tehran's firing of a medium-range ballistic missile, a new punishment one day after the Obama administration lifted economic penalties against the Islamic Republic over its nuclear program.