evidence: In addition to ceding territory that had been ruled by the Qing dynasty, the treaty also ceded territory under Korean jurisdiction, notably the island (by that time and currently a peninsula at the southernmost end of Primorsky Krai) of Noktundo. This was not known to the Koreans until the 1880s (20 or so years after the signing of the treaty, to which Korea was not a party), at which point it became a matter of official protest as the Koreans asserted that the Qing had no authority to cede Noktundo to Russia. [...] Noktundo [edit]The status of Noktundo, which had been under Korean jurisdiction from the turn of the 17th century but was (unbeknownst to the Koreans until the 1880s) ceded to Russia in the treaty, remains formally unresolved, as only one of two Korean jurisdictions/governments have accepted a border agreement with Russia.[7] North Korea and the USSR signed a border treaty in 1985 officially certifying the Russian-North Korean border as running through the center of the Tumen River[8] which left the now-peninsula of Noktundo on the Russian side of the border. This agreement is not recognized by South Korea, which has since demanded Noktundo's return to Korean jurisdiction (ostensibly this would be North Korean jurisdiction, with the expectation of unified Korean control after an eventual Korean reunification).[9] [...] - ^ Проблема острова Ноктундо в средствах массовой информации Южной Кореи [The problem of the Noktundo island in the media in South Korea] (in Russian). ru.apircenter.org. Archived from the original on 10 September 2013. Retrieved 30 June 2015.