According to SEOUL, South Korea - North Korea's communist regime has warned of a nuclear war on the Korean peninsula while vowing to step up its atomic bomb-making program in defiance of new U.N. sanctions.

The North's defiance presents a growing diplomatic headache for President Barack Obama as he prepares for talks Tuesday with his South Korean counterpart on the North's missile and nuclear programs.

A commentary Sunday in the North's the main state-run Rodong Sinmun newspaper, carried by the official Korean Central News Agency, claimed the U.S. has 1,000 nuclear weapons in South Korea. Another commentary published Saturday in the state-run Tongil Sinbo weekly claimed the U.S. has been deploying a vast amount of nuclear weapons in South Korea and Japan.

North Korea "is completely within the range of U.S. nuclear attack and the Korean peninsula is becoming an area where the chances of a nuclear war are the highest in the world," the Tongil Sinbo commentary said.

Kim Yong-kyu, a spokesman at the U.S. military command in Seoul, called the latest accusation "baseless," saying Washington has no nuclear bombs in South Korea. U.S. tactical nuclear weapons were removed from South Korea in 1991 as part of arms reductions following the Cold War.

On Saturday, North Korea's Foreign Ministry threatened war on any country that dared to stop its ships on the high seas under the new sanctions approved by the U.N. Security Council on Friday as punishment for the North's latest nuclear test.

It is not clear if the statements are simply rhetorical. Still, they are a huge setback for international attempts to rein in North Korea's nuclear ambitions following its second nuclear test on May 25. It first tested a nuclear device in 2006.

In its Saturday's statement, North Korea said it has been enriching uranium to provide fuel for its light-water reactor. It was the first public acknowledgment the North is running a uranium enrichment program in addition to its known plutonium-based program. The two radioactive materials are key ingredients in making atomic bombs.

On Sunday, Yonhap news agency reported South Korea and the U.S. have mobilized spy satellites, reconnaissance aircraft and human intelligence networks to obtain evidence that the North has been running a uranium enrichment program.

South Korea's Defense Ministry said it cannot confirm the report. The National Intelligence Service - South Korea's main spy agency - was not available for comment.

North Korea said more than one-third of 8,000 spent fuel rods in its possession has been reprocessed and all the plutonium extracted would be used to make atomic bombs. The country could harvest 13-18 pounds (6-8 kilograms) of plutonium - enough to make at least one nuclear bomb - if all the rods are reprocessed.

In addition, North Korea is believed to have enough plutonium for at least half a dozen atomic bombs.

North Korea says its nuclear program is a deterrent against the U.S., which it routinely accuses of plotting to topple its regime. Washington, which has 28,500 troops in South Korea, has repeatedly said it has no such intention.

The new U.N. sanctions are aimed at depriving the North of the financing used to build its rogue nuclear program. The resolution also authorized searches of North Korean ships suspected of transporting illicit ballistic missile and nuclear materials.

U.S. Secretary of State Hillary Rodham Clinton said the new U.N. penalties provide the necessary tools to help check North Korea's continued pursuit of nuclear weapons.

The sanctions show that "North Korea's pursuit of nuclear weapons and the capacity to deliver those weapons through missiles is not going to be accepted by the neighbors as well as the greater international community," Clinton said Saturday at a news conference in Canada.

The United Nations Security Council sent a clear and united message on June 12, 2009, when they voted unanimously to tighten sanctions on North Korea following the nation’s recent nuclear test and missile firings. The detonation on May 25 of the suspected nuclear device violated the 1953 armistice.

U.N. Resolution 1874 includes a number of measures aimed at stopping North Korea’s nuclear proliferation, including tougher inspections of cargo, an expanded arms embargo, and new financial restrictions on North Korea, curbing loans and money transfers that serve as funding for their nuclear program.

The vote on Resolution 1874, United States Ambassador Rosemary DiCarlo said that North Korea chose a path of provocation, and now they must face the consequences. "United States welcomes the strong and united response to North Korea’s nuclear test, and is committed to implementing the provisions outlined by the Security Council" said United States Ambassador Rosemary DiCarlo.

Sources:

Yahoo.com

The White House

Reported by catch4all.com, Sandra Englund