In the next days there will likely be a military clash between North and South Korea. With hardliners on both side and little attention in Washington a small sea skirmish could escalate into something much bigger.
Today North Korea launched another missile, this a ground-to-air one and warned of further measures. It clearly wants attention though not from the UN Security Council. From the AP account:
"If the U.N. Security Council makes a further provocation, it will be inevitable for us to take further self-defense measures," the North's Foreign Ministry said in a statement carried by the official Korean Central News Agency.
North Korea also accused the Security Council of hypocrisy.
"There is a limit to our patience," the statement said. "The nuclear test conducted in our nation this time is the Earth's 2,054th nuclear test. The five permanent members of the U.N. Security Council have conducted 99.99 percent of the total nuclear tests."
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Fears have increased of military skirmishes, particularly in disputed waters off the western coast, after North Korea conducted the nuclear test on Monday and then renounced the truce that has kept peace between the Koreas since the Korean War ended in 1953.
That would be this line which the North wants to have moved further down.

Some historic background on that line can be found in this Joong Ang Daily piece from 2007.
There are already signs that something is imminent to happen there. AP continues:
From Yeonpyeong, the South Korean island closest to North Korea, about a dozen Chinese ships could be seen pulling out of port in the North and heading elsewhere. South Korea's Yonhap news agency reported that more than 280 Chinese vessels were fishing in the area earlier this week, but the number has dropped to about 140.
In 1999 and 2002 North Korean patrol ships crossed the line which led to small sea battles with several dead and wounded on each side.
The South Koreans government is prepared and has threatened escalating retaliation against any hostile action:
The official said if North Korea attacks South Korean naval or civilian vessels, the South will counter by targeting North Korean ships’ missile bases. An official in the South Korean Navy also said the South’s forces are preparing to thwart the North’s ground-to-ship or ship-to-ship missiles.
To respond to a sea skirmish with an attack on land missile bases is an escalation which likely would be answered with an escalation which likely would be answered …
Let us hope that in the event of a small sea clash South Korea does not take the threatened step. The North would certainly answer and the whole issue could get out of hand.
The UN Security Council has not yet decided if or how to sanction North Korea for its second nuclear test. Writes the AP:
Russia's U.N. ambassador said Thursday there was wide agreement among key world powers on what a new U.N. resolution should include, but said putting the elements together will take time because the issues are "complicated."
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Diplomats said a draft of the proposed resolution is not expected to be circulated until next week.
Well – the draft is available here (pdf), retrieved by Inner City Press, but the crucial paragraph 8 is yet empty.
But it may not matter much anyway. North Korea will likely respond to any UN Council resolution with some aggressive measure. What will be crucial now is how South Korea will respond to that. The hard line government of President Lee Myung-bak is under pressure after unproven corruption allegations against former President Roh Moo-hyun led to his suicide:
Former president Kim Dae-jung, Roh’s immediate predecessor, had accepted the invitation by Roh’s aides to give the eulogy, but the idea was vetoed by the incumbent administration, said Cheon Ho-seon, former presidential spokesman for Roh. The Lee government said letting Kim give the speech in the presence of other former presidents will raise a “fairness issue.”
After visiting the mourning altar in front of Seoul Station yesterday morning, Kim harshly criticized the Lee government.
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“The prosecution has conducted probes of the children and relatives of Roh but none of the corruption allegations has been confirmed by the day of his death,” Kim continued. “Does it make sense that the prosecution has failed to come up with any evidence 20 days after questioning the former president?” The 2000 Nobel Peace Prize awardee also added that the Lee administration’s moves to block the entrance to Seoul Plaza downtown and prohibit his speech signal “an enormous digression from democracy.”
The government put a lot of police into the streets to suppress any demonstrations against it during or after Roh's funeral today. It may even hope that some escalation with the North diverts attention from interior South Korean issues, the Roh suicide and the economic situation.
Washington should better have more attention on this. Ultimately the North wants security guarantees from the U.S. so it can eventually open up its economy while the regime can stand in place. The U.S. pressing China for harder sanctions now will not be enough to avoid a potentially very deadly war.