Israeli prime minister Benjamin Netanyahu said on Sunday that his country does not seek regime change in Iran on the condition that it suspends its uranium enrichment program.

Western powers that are in negotiation with Iran over its nuclear program suspect that it is designed for the Islamic country to be able to develop nuclear weapons. “All these talks,” lamented Netanyahu, “hasn’t stopped the regime one bit.”

The Israeli leader told Fox News Sunday that Wednesday’s bus bombing in the Bulgarian Black Sea resort city of Burgas was a reminder “that the world’s most dangerous regime must be allowed to have the world’s most dangerous weapons.” Iran supports the terrorist organization Hezbollah that Israel believes carried out the attack.

“I know, based on absolutely rock solid intelligence, this is Hezbollah and this is something Iran knows about very, very well,” said Netanyahu.

He expressed his frustration about the failure of the five permanent members of the United Nations Security Council plus Germany to reach a deal with Iran under which it would forego any attempt to build nuclear weapons. Iran insists that it has no such ambition and that it is entitled to enrich uranium for peaceful purposes.

“Since the previous rounds of talks, they’ve enriched material for five nuclear bombs,” according to Israel’s prime minister. “They’re basically thumbing their nose at the international community.”

They’re basically saying, we can talk, we can delay, we can deceive, while we’re continuing to race toward atomic weapons.

Since the five permanent members of the Security Council — China, France, Russia, the United Kingdom and the United States — joined with Germany in 2006 to negotiate with Iran, there has been no breakthrough to stop Iran’s nuclear program. Throughout the years, Israel has repeatedly warned that it may resort to carrying out airstrikes against Iranian nuclear sites if there isn’t a diplomatic solution.

On Tuesday, the P5+1 will again meet with Iranian negotiators for a “technical” meeting in Turkey to “look further at how existing gaps in positions could be narrowed and how the process could be moved forward.”