Is reducing the world's nuclear arsenals to zero possible, or even desirable?

How would the Israeli defense establishment respond if Iran went nuclear?

All previous attempts at total nuclear disarmament have failed, as strategic logic and state interest have prevailed over wishful thinking. A similar fate awaits Global Zero, the newest disarmament movement, for similar reasons.

Is it too late to convince North Korea and Iran to dismantle their nuclear programs?

Why North Korea will not change.

In Moscow, President Barack Obama will focus on improving U.S.-Russia relations, which suffered during the final years of the Bush administration. But analysts say moving beyond rhetoric toward substantive change could be complicated by history and competing interests.

The war between Russia and Georgia has complicated Western efforts to pressure Iran over its nuclear program, analysts say.

Washington’s latest revisions to its stance on North Korea nuclear-disarmament talks, experts say, threatens to undermine counter-proliferation efforts.

The U.S. signals new efforts to pressure Iran just as it seeks to expand ties with resource-rich states in the Shanghai Cooperation Organization.

UN inspectors confirmed the shutdown of North Korea’s main nuclear reactor. Does this represent genuine progress or just another feint by the North Korean regime?

Iran now says it will attend a conference on Iraqi security and has shown a willingness to negotiate on its nuclear program amid growing pressure.

Six-Party Talks stall, despite a U.S. policy shift involving the release of frozen North Korean funds from a bank in Macao.

A second round of UN sanctions is expected against Iran, including a possible arms embargo. Yet experts disagree whether more sanctions will make Tehran buckle.

Efforts to normalize U.S.-North Korea relations are underway as questions surround 2002 intelligence on Pyongyang’s uranium enrichment program.

An IAEA report affirms Iran is defying another nuclear deadline set by the Security Council but it is unclear what punitive measures will follow.

Officials at the Six-Party Talks in Beijing announced a tentative deal to curb North Korea’s nuclear program. But experts warn the history of such "breakthroughs" warrants caution.

Washington recently sat down for talks with Pyongyang in Berlin and Six-Party Talks are set to resume in early February.

Pyongyang agreed to rejoin Six-Party Talks on its nuclear program a year after walking away from negotiations. But the meetings, which resumed in Beijing this week, hold little hope of stopping a now-nuclear North Korea.

China, whose relations with North Korea have grown strained in recent weeks, is putting pressure on Pyongyang to return to the Six-Party Talks.