Former Israeli foreign minister Avigdor Lieberman said on Wednesday that sanctions and negotiations will not stop Iran from pursuing its disputed nuclear program. Lieberman said North Korea's nuclear test was an "obvious example" of diplomacy failing to curb a nuclear program.

Speaking to Army Radio on Wednesday, Lieberman stated that "anyone who thinks sanctions or negotiations will stop Iran is wrong."

Israeli Prime Minister Benjamin Netanyahu often hints about a possible strike on Iran's nuclear facilities.

Lieberman stepped down from his post two months ago after he was indicted for breach of trust in a fraud and money-laundering case. But he remains a powerful lawmaker and Netanyahu's top political ally.

Meanwhile, talks between a team from the International Atomic Energy Agency (IAEA) and Iranian nuclear officials began in Tehran on Wednesday, in the latest effort to resolve differences over Iran's nuclear projects.

In the talks, held at the Iranian Atomic Energy Organization, the IAEA team headed by chief inspector Herman Nackaerts is to press for access to suspect documents, nuclear officials and especially the Parchin military base, where nuclear weapons parts have allegedly been tested.