Where does this guy get his information from?

Seongnam Mayor Lee Jae-myung (Yonhap)

Seongnam Mayor Lee Jae-myung, one of the leading presidential hopefuls for the opposition bloc, said Tuesday that South Korea should pay less of the defense-cost sharing with the United States, clashing with calls by President-elect Donald Trump’s plan to get Washington’s allies to contribute more.

“South Korea’s defense-sharing cost should be on par with that of Japan,” Lee said during an interview with CBS Radio.

“Germany and Japan pay 18 percent and 50 percent, respectively, while South Korea shares stand at 77 percent,” he claimed.

Lee said the U.S. military presence in the country reflects Washington’s own interests and not that of South Korea. The mayor added the U.S. will suffer a great loss if it pulls its military out of South Korea.  [Yonhap]

You can read more at the link, but Japan pays 74.5% of US defense costs, not 50%, while South Korea pays about 50%. Mayor Lee is either blatantly lying for votes or is completely uninformed.  Either way it does not reflect positively on him.  I wonder if Mayor Lee wants to return to the old days when the Korean government paid the North Koreans more money to fund their nuclear and weapons program than what they spent funding the US-ROK alliance?

UPDATE:

From the Korea Times comes further information on how Mayor Lee came up with his 77% number:

Korea and the United States hold negotiations on cost-sharing for the upkeep of 28,000 American troops every five years under the Special Measures Agreement (SMA). Seoul pays about half the cost — 944.1 billion won ($782 million) and 932 billion won in 2016 and 2015, respectively. The last SMA was made in 2014 and the next negotiations for 2019 through 2023 are likely to begin later this year, according to the foreign ministry.

However, Seongnam Mayor Lee Jae-myung, a liberal presidential hopeful, claimed Tuesday that South Korea is actually paying more than Japan and Germany, both of which have a U.S. forces presence.

According to him, Germany and Japan pay 18 percent and 50 percent of the total costs, respectively, while South Korea share stands at 77 percent.

His calculation includes indirect costs such as providing land for bases and firing ranges for free along with an exemption from taxation and benefits such as cheaper electricity and telephone charges — things not included in the SMA negotiations.

In addition, civic groups also insist that the SMA should include the nation’s support such as providing police to guard bases and troops under the Korean Augmentation to the United State Army (KATUSA) program. [Korea Times]

You can read more at the link, but if Mayor Lee wants to play the game of including costs not in the cost sharing agreement than the US side can play that game to.  So how much does the use of the US military’s stealth bombers and B-52’s cost?  Better yet what about the cost of using the US space based satellites and sensors in support of South Korea?  What is the cost of all the US troops that would come to the peninsula in case of a crisis?  I could go on and on with costs the US military can add to the cost sharing agreement that right now the ROK is not paying for.

The next cost sharing negotiations to begin this year could end up being really interesting if a committed left wing candidate like Mayor Lee is elected and insists on South Korea paying less.