President Obama and Israel Prime Minister Benjamin Netanyahu are at it again, this time over international negotiations concerning Iran's nuclear program.

While Netanyahu criticized extension of the talks, Obama said they are the best hope of resolving the Iran dispute diplomatically, and to get Tehran to forgo the means to develop nuclear weapons.

"That window is closing, and Iran needs to take advantage of it," Obama said last evening in Colombia. "But it is absolutely the right thing to do for the U.S. government, working in concert with the other permanent members of the Security Council, with Germany, with the rest of the world community, to pursue this path."

After a first round of talks this weekend, the parties agreed to meet again on May 23 in Baghdad -- giving Iran "a freebie," in the words of Netanyahu.

"It has got five weeks to continue enrichment without any limitation, any inhibition," Netanyahu said. "I think Iran should take immediate steps to stop all enrichment, take out all enrichment material and dismantle the nuclear facility in Qom."

Netanyahu also said: "I believe that the world's greatest practitioner of terrorism must not have the opportunity to develop atomic bombs."

The dispute plays out amid concerns that Israel may launch an attack on Iran's nuclear facilities.

Obama said negotiators have made it clear to Iran that "we're not going to have these talks just drag out in a stalling process."

"But so far, at least, we haven't given anything away, other than the opportunity for us to negotiate and see if Iran comes to the table in good faith." Obama said.

AFP reports: