Israeli Prime Minister Benjamin Netanyahu warned today that Iran has no plans of dismantling its nuclear program, accusing the Islamic republic of playing a “chess game.”

Bibi addressed reporters in Prague after meeting with Czech President Vaclav Klaus, saying the Iranian nuclear crisis is “the paramount issue of our time.”

The comments come just days ahead of the P5+1 conference next week, in which world leaders will once more try to negotiate with Iran on its uranium enrichment project. The Islamic republic says its nuclear facilities are for research purposes, but the Jewish state and many in the West believe it to be for nuclear warfare.

Netanyahu’s government has long threatened that Israel will take military action if necessary to stop Iran’s acquiring a nuclear weapon. The US and Europe have urged economic sanctions to handle the problem, but Netanyahu said in Prague that such a plan is not enough.

“I have to say I see no evidence whatsoever that Iran is serious about ending its nuclear program,” he said.

In the briefing, the PM reiterated his three-pronged list of requirements from the Iranian regime: that it cease its enrichment of uranium, hand over the supply it already has and shut down its Qom facility.

“When this is achieved, I’m the first one to applaud. But until then, you have to count me among the skeptics,” Netanyahu said.

Bibi cautioned that Iran will continue to use talks like the P5+1 summit to “buy time, pretty much as North Korea did for years,” going “from meeting to meeting with empty promises.” He added that “Iran is very good in playing this chess game.”