NUCLEAR WEAPONS

The Bulletin of the Atomic Scientists is keeping its longtime Doomsday Clock at five minutes to midnight for 2013, and the committee of scientists and Nobel Laureates is urging President Barack Obama to address the threat of global climate change.

Park, a conservative, also took an apparent swipe at Japan, Korea’s former colonial ruler.

Iran has reacted cooly to Barack Obama's reelection as U.S. president, citing his support of crippling economic sanctions.

Pakistan is believed to already possess between 90 and 110 nuclear warheads.

The Iranian nuclear technology dance continued Tuesday as EU foreign affairs chief Ashton met with Iranian National Security Council Secretary Jalili.

On Monday at a summit, Iran's nuclear head accused the IAEA of sabotaging one of Iran's newest nuclear plants, and once again denied that uranium was being enriched for warheads.

What are Iran's nuclear capabilities at present, and is a preemptive military strike necessary? A difference of opinion between German Chancellor Angela Merkel and Israeli Prime Minister Benjamin Netanyahu show that major world powers are at odds over these pivotal issues.

An armada of military hardware from 25 nations, including battleships, aircraft carriers, submarines and minesweepers has descended on the Persian Gulf as Western policy makers desperately try to convince Israel that diplomacy and sanctions designed to halt Iran?s nuclear program need more time to work.

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Iran appears to be using a tricky system of oil shipping and transferring at the offshore port of Labuan near Malaysia in order to get its crude to Asian markets, skirting Western sanctions.

Dr. Ephraim Asculai does not see a bombing by Israel or the U.S. as imminent, but that doesn't mean it won't happen. Hawks, however, may be disappointed by what an attack could really accomplish.

The U.S. and its allies have long sought to pressure Russia and China into backing such a statement against Iran, amidst fears that Israel would unilaterally attack Iran in a pre-emptive measure in lieu of finding a diplomatic solution to the crisis.

orth and South Korea technically remain at war since 1953, when their civil war ended in a truce instead of a peace treaty.

Israeli Prime Minister Benjamin Netanyahu expressed impatience on Monday, saying that Israel has the right to stop Iran from acquiring nuclear weaponry.

U.S. President Barack Obama's speech Thursday night earned mixed reviews, but his reminder of the campaign promises he ran on in 2008 made members of the audience emotional. Obama reminded the audience that all Americans, Democrat and Republican, have problems that can be solved.

John Kerry, the one-time presidential nominee of the Democratic Party back in 2004, took the stage at the Democratic National Convention (DNC) Thursday night to support President Barack Obama's candidacy for a second term. The senior senator from Massachusetts and the tenth most senior figure in the Senate had one of the best speeches of the night by most accounts. John Kerry Speech At DNC 2012 Rattles GOP, Romney-Ryan Ticket [VIDEO, FULL TRANSCRIPT]

Former U.S. intel chief Michael Hayden talks about the known-unknowns of an attack on Iran, questioning whether Israel had the ability to take unilateral action against Tehran.

Iran could strike U.S. bases in the Middle East in response to any Israeli strike on its nuclear facilities, the leader of Lebanon's Iranian-backed militant group Hezbollah said Monday.

Prime Minister Benjamin Netanyahu demanded Sunday a "clear red line" be drawn that would convince Tehran that world powers are serious about stopping Iran from building nuclear weapons.

Iran's Supreme Leader has declared that Iran has and never will pursue a nuclear weapon, and that possessing one is "a big and unforgivable sin."

UN Secretary General Ban Ki-moon communicated to Iranian leaders his strong disapproval of Iran's rights record and of its stand on key issues causing regional and global tensions, within hours of his arrival in Tehran to attend the Non-Aligned Movement (NAM) summit Wednesday.