Dec. 21 (UPI) -- The resignation of U.S. Defense Secretary James Mattis is sending ripples throughout South Korea's policy community amid a lack of bilateral consensus on military burden-sharing for U.S. forces on the peninsula, according to a press report.
Park Hwee-rhak, a political scientist at Kookmin University in Seoul, said Mattis' planned departure has "unnerved" the U.S.-South Korea alliance, Stars and Stripes reported Thursday.
"I think Trump's decision to withdraw U.S. troops from Syria completely and swiftly has unnerved the U.S.-South Korean alliance ... It shows the United States won't play the role of the world's policeman despite a desire to do so from the president's advisers, including the defense secretary," Park said, according to the report.
Since Trump met with Kim Jong Un in June, Washington and Seoul have canceled several defense exercises -- most recently Vigilant Ace, an annual drill held in December.
The president had called the joint exercises "provocative" and had asked South Korea to pay more for the presence of U.S. troops on the peninsula.
The most recent talks on the Special Measures Agreements ended without an accord, after Trump reportedly asked Seoul to double its contribution to more than $1 billion.
The Trump administration has become amenable to proposals from Seoul on inter-Korea exchange, however.
Biegun, who is in the South for talks, visited the border area of Panmunjom on Wednesday.
According to South Korea's presidential Blue House, Chung and Biegun discussed a "wide range of measures to promote cooperation with North Korea, including denuclearization and humanitarian assistance."
Biegun and South Korean counterpart Lee Do-hoon agreed Seoul should go ahead with an inter-Korea railroad project, according to News 1.