CARTAGENA, Colombia -- President Barack Obama says the U.S. hasn't "given away anything" to Iran in the latest round of talks over the Islamic republic's nuclear program.

Obama is responding to criticism from Israeli Prime Minister Benjamin Netanyahu who says the U.S. and world powers gave Iran a "freebie" by agreeing to hold more talks next month. Netanyahu says that gives Iran more time to continuing enriching uranium without restrictions.

Obama dismissed that notion, saying the U.S. and its partners have been clear with Iran about the goals of the talks. Diplomats who met with Iran in Istanbul on Saturday called the talks constructive and useful.

The U.S. has been trying to convince Israel not to launch a military strike on Iran's nuclear facilities and insists there is time for diplomacy to work.

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