WASHINGTON - US lawmakers on Monday pushed for more sanctions against Iran after talks between Tehran and global powers failed to stop Iran from developing its nuclear program.

Although the talks between Iran, the United States and five other world powers were described as "constructive" by the European Union's foreign policy chief, Catherine Ashton, some US lawmakers said they were unimpressed.

"The United States should not mistake positive diplomatic dialogue for compliance with United Nations Security Council resolutions," said a spokesman for Republican Senator Mark Kirk.

Please LIKE our Facebook page - it makes us stronger