Prime Minister Benjamin Netanyahu said Friday that Iran is good at playing "chess game" in negotiations about its nuclear program, local media reported, quoting an official statement.

"Obviously, nothing would be better than to see this issue resolved diplomatically. But I have seen no evidence that Iran is serious about stopping its nuclear weapons program," Netanyahu said during a visit to the Czech Republic.

"They may try to go from meeting to meeting with empty promises. They may agree to something in principle but not implement it. They might even agree to implement something that does not materially derail their nuclear weapons program," he added, according to an official statement.

The P5+1 group -- the United States, Britain, France, China and Russia plus Germany, is set to meet Iranian officials on May 23 in Baghdad, Iraq, for a new round of talks over the Islamic Republic' s disputed nuclear program.

The Israeli leader then reiterated three demands concerning the nuclear issue, "Freeze all enrichment inside Iran, remove all enriched material outside of Iran, and dismantle (uranium enrichment facility located in) Qom."

"When this goal is achieved, I will be the first to applaud. Until then, count me among the skeptics," he said.

Israel, along with many other Western countries, has accused Iran of secretly seeking the capability of making nuclear bombs, while Tehran insists its nuclear program is only for peaceful purposes, such as power generation and medical research.