South Korea's foreign minister is expected to hold talks with his U.S. counterpart in Germany this weekend, a diplomatic source said Wednesday.
  

Foreign Minister Yun Byung-se is likely to meet with U.S. Secretary of State John Kerry on Saturday or Sunday on the sidelines of the Munich Security Conference that kicks off Friday for three days, the source said, adding the two sides are fine-tuning the details.
  

Yun will fly to Germany on Thursday for a four-day stay, which includes a planned meeting with his German counterpart Frank-Walter Steinmeier in Berlin and a set of bilateral talks in Munich.
  

The two top diplomats are widely expected to reaffirm close coordination on North Korea's nuclear issue amid the long-stalled six-party talks on ending Pyongyang's nuclear weapons program.
  

Seoul and Washington have been making a flurry of diplomatic efforts to show their strong alliance and close working relationship on ending North Korea's nuclear weapons program.
  

Wendy Sherman, U.S. undersecretary of state for political affairs, visited Seoul last week for talks, where she stressed there is "no daylight" between Seoul and Washington in dealing with North Korea.
  

Her visit came amid lingering concerns here that Washington's fresh sanctions on North Korea may hinder Seoul's bid for inter-Korean dialogue. Sherman stressed Washington supports Seoul's initiative for talks with the North.
  

Despite the stalled multilateral denuclearization talks, the U.S. has not utterly shut the door on dialogue with the North as it recently attempted to have exploratory talks with the country, but with no avail.
  

Sung Kim, Washington's top nuke envoy, had offered to meet with North Korea's top nuclear negotiator in a third country during his recent trip to Asia, according to a diplomatic source. But the proposed meeting did not materialize as the North insisted on a meeting in Pyongyang.
  

Meanwhile, U.S. Deputy Secretary of State Tony Blinken may visit Seoul next week as part of his regional trip to Northeast Asia, according to the source.
  

It will be his first regional tour of Asia since he became No. 2 at the State Department last month. Blinken served as U.S. President Barack Obama's deputy national security adviser. (Yonhap)