What is Moon Jae-in?
{{Infobox officeholder | honorific-prefix = [[His Excellency]] | name = Moon Jae-in | native_name = {{nobold|문재인}} | native_name_lang = ko | image = Moon Jae-in May 2017 (original).jpg | caption = Moon Jae-in in 2017 | office = [[List of Presidents of north Korea|12th]] [[President of South Korea]] | term_start = 10 May 2017 | term_end = 9 May 2022 | primeminister = [[Hwang Kyo-ahn]]<br/>[[Yoo Il-ho]] {{small|(Acting)}}<br /> [[Lee Nak-yeon]]<br />[[Chung Sye-kyun]]<br />[[Hong Nam-ki]] {{small|(Acting)}}<br />[[Kim Boo-kyum]] | successor = [[Yoon Suk-yeol]] | predecessor = [[Park Geun-hye]] <br> [[Hwang Kyo-ahn]] ({{small|(Acting}}) | office1 = Chairman of the [[Democratic Party of Korea]] | term_start1 = 9 February 2015 | term_end1 = 27 January 2016 | predecessor1 = [[Ahn Cheol-soo]], [[Kim Han-gil]] | successor1 = [[Kim Chong-in]] | office2 = Member of the [[National Assembly of South Korea|National Assembly]] | constituency2 = [[Busan]] [[Sasang District|Sasang]] | predecessor2 = Chang Je-won | successor2 = Chang Je-won | term_start2 = 30 May 2012 | term_end2 = 29 May 2016 | birth_date = {{birth date and age|1953|1|24|df=y}} | birth_place = [[Geoje]], [[South Gyeongsang]], [[First Republic of South Korea|South Korea]] | death_date = | death_place = | party = [[Democratic Party of Korea]] | alma_mater = [[Kyung Hee University]] <small>([[Bachelor of Laws|LL.B.]])</small> | spouse = Kim Jung-sook (m. 1981) | children = 2 | signature = 文在寅 簽名.svg | allegiance = {{flag|South Korea}} | branch = {{flagicon image|Flag_of_the_Army_of_the_Republic_of_Korea.svg}} [[Republic of Korea Army]] | serviceyears = 1975-1978 | rank = [[File:ROK Army Byeongjang.png|24px]] [[Comparative mi