The US and North Korea accuse each other of failing to abide by the agreement.
This concerning pattern occurs in the absence of any regular engagement between the US and North Korea.
North Korea says the rocket carried a communications satellite into space, but the US and North Korea's neighbours have long believed such operations represent attempts by Pyongyang to develop long-range missiles.
The players' visit comes at a time of heightened tensions between the US and North Korea over the test and Pyongyang's launch of a three-stage rocket, a move condemned by the UN as a banned test of missile technology.
The US and North Korea's neighbours fear Pyongyang's ultimate goal is to put a nuclear warhead on a long-range missile that could target the west coast of the US, but it is not believed to have mastered the technology yet.
BBC: North Korea in nuclear warning after UN rocket resolution
The visit by the players comes at a time of heightened tensions between the US and North Korea over the test and Pyongyang's launch of a three-stage rocket, a move condemned by the UN as a banned test of missile technology.
Those efforts led to the signing of the February 13, 2007 bilateral deal between the US and North Korea, in which Pyongyang pledged to end its nuclear programs within 60 days in exchange for diplomatic acceptance by the US and economic assistance from the US and the international community.
The resolution, which is expected to pass, was proposed by China and the US, and will target North Korea's diplomats, cash transfers and access to luxury goods.
It was the result of a compromise deal between the US and China, North Korea's closest ally.
The talks involving the US, North and South Korea, China, Russia and Japan could get underway again as soon as next month.
"We are expecting to discuss how South Korea and the US can co-operate to cope with North Korea's threats, to analyse North Korea's threats and to discuss how to further improve the South Korea-US military relationship, " ministry spokesman, Kim Min-seok, said.
Rather than fearing the US, Iran, Syria and North Korea behave as though the US is a paper tiger.
The UN resolution, passed on Tuesday, was proposed by the US and backed by China, North Korea's closest ally and biggest trading partner.
At the same time, both South Korean intelligence and US Defense Department sources have accused North Korea of responsibility for launching massive cyber-attacks against US and South Korean computer systems over the past week.
Israel and the US view North Korea as an isolated Asian nuisance that has little connection to the war in the Middle East.
The US, South Korea and Japan - who believe North Korea is working to develop long-range missiles capable of carrying nuclear warheads - want action such as the strengthening of sanctions.
Ta Kung Pao, a Beijing-backed Hong Kong newspaper, foresees a "military conflict ready to break out at any moment" from more missile and nuclear tests by North Korea, and also puts the blame on the US, Japan and South Korea.
Recent reports from South Korean and US bodies which monitor North Korea's nuclear test sites had said North Korea could be preparing for a third test.
The US and other regional allies fear North Korea is working to develop a nuclear warhead small enough to arm a missile, though it is not believed to have achieved this yet.
While North Korea has issued many threats against the US and South Korea in the past, recent days have seen unusually fiery and sustained rhetoric.
"They have chosen the path they are on and I am very pleased that we have a unified international community, including China and Russia, in setting forth a very specific condemnation of North Korea and working with us for a firm resolution going forward, " Clinton said, also underscoring the commitments the United States "has and intends to honor" toward South Korea and Japan.
CNN: Clinton slams N. Korea's rhetoric, 'belligerent' actions
Officials from the US, China, North Korea and Japan, among other countries, also sent messages of condolence.
North Korea has made multiple threats against both the US and South Korea in recent weeks, including warning of a "pre-emptive nuclear strike" on the US and the scrapping of the Korean War armistice.
North Korea on Monday rejected calls for talks by the US and South Korea, but its rhetoric does appear to have lessened recently, and regional fears of a missile launch have so far not been realised, our correspondent adds.
At the Olympics Kazakhstan and North Korea are beating us in the medal count.
Finally, Bush argued that to defeat Iran, Syria and North Korea, the US must have international support for its efforts.
But it is also incumbent upon all of us to insist that nations like Iran and North Korea do not game the system.
After threatening a pre-emptive nuclear attack on the US and war on neighbouring South Korea, North Korea said it intended to restart facilities at its Yongbyon nuclear complex.
The official said the department does not vet U.S. citizens' private travel to North Korea and urges US citizens contemplating travel there to review a travel warning on its website.
In recent weeks reports from both the US and South Korea have described activity at North Korea's nuclear test sites, sparking concerns North Korea could be preparing for a third test.
BBC: North Korea in nuclear warning after UN rocket resolution
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