The United States has said punitive measures such as freezing Iranian assets or imposing travel restrictions on senior officials will be on the agenda.
On April 17, Iranian Supreme National Security Council Secretary Ali Larijani said Iran will not be bullied or threatened by the United States into stopping its uranium enrichment work.
The UN Security Council has demanded Iran halt all nuclear enrichment work by April 28.
The United States has accused Iran of trying to develop nuclear weapons. Iran insists its nuclear program is strictly for generating energy.
(dpa, Reuters, AP)