The U.S believes that sanctions have an effect in bringing Iran to negotiation table, Deputy Assistant Secretary in the Bureau of European and Eurasian Affairs, Eric Rubin said during a press conference in Baku on Monday.
"I cannot say something specific about possible further efforts. But we are determined to keep pressure on Iran," Rubin said.
He said the U.S. appreciates Azerbaijan's effort to support the international community in very critical work to ensure that Iran is not developing nuclear weapons.
"As a close neighbor Azerbaijan have an important role to play and is playing it," Rubin said.
He stressed the U.S. believes it is making progress in convincing Iranian government that it has very positive options to continue its program within Treaty on the Non-Proliferation of Nuclear Weapons.
"I think that this is the highest priority. We believe that this effort needs to continue," Rubin said.
The U.S. and other Western countries accuse Iran of developing nuclear weapons under cover of peaceful nuclear energy program. Tehran denies the charges, saying its nuclear program is exclusively peaceful.