Saudi Arabia vows to help S. Korea if oil supply disrupted

South Korean President Moon Jae-in, right, shakes hands with Saudi Crown Prince Mohammed bin Salman during a meeting at the presidential Blue House, W... South Korean President Moon Jae-in, right, shakes hands with Saudi Crown Prince Mohammed bin Salman during a meeting at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

Saudi Crown Prince Mohammed bin Salman, left, speaks with South Korean President Moon Jae-in, not pictured, at the presidential Blue House, Wednesday,... Saudi Crown Prince Mohammed bin Salman, left, speaks with South Korean President Moon Jae-in, not pictured, at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

South Korean President Moon Jae-in, right, talks with Saudi Crown Prince Mohammed bin Salman, not pictured, at the presidential Blue House, Wednesday,... South Korean President Moon Jae-in, right, talks with Saudi Crown Prince Mohammed bin Salman, not pictured, at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

Sultan Mofti, deputy governor for Investment Attraction & Development of the Saudi Arabian General Investment Authority, listens during a partnership ... Sultan Mofti, deputy governor for Investment Attraction & Development of the Saudi Arabian General Investment Authority, listens during a partnership convention between Saudi Arabia and South Korea in Seoul, South Korea, Wednesday, June 26, 2019. The partnership convention was held while Saudi Crown Prince Mohammed bin Salman visit to discuss bilateral relations between the two countries with South Korean President Moon Jae-in. (AP Photo/Lee Jin-man)

Sultan Mofti, deputy governor for Investment Attraction & Development of the Saudi Arabian General Investment Authority, listens during a partnership ... Sultan Mofti, deputy governor for Investment Attraction & Development of the Saudi Arabian General Investment Authority, listens during a partnership convention between Saudi Arabiia and South Korea in Seoul, South Korea, Wednesday, June 26, 2019. The partnership convention was held while Saudi Crown Prince Mohammed bin Salman visit to discuss bilateral relations between the two countries with South Korean President Moon Jae-in. (AP Photo/Lee Jin-man)

Sultan Mofti, deputy governor for Investment Attraction & Development of the Saudi Arabian General Investment Authority, stands during a partnership c... Sultan Mofti, deputy governor for Investment Attraction & Development of the Saudi Arabian General Investment Authority, stands during a partnership convention between Saudi Arabia and South Korea in Seoul, South Korea, Wednesday, June 26, 2019. The partnership convention was held while Saudi Crown Prince Mohammed bin Salman visit to discuss bilateral relations between the two countries with South Korean President Moon Jae-in. (AP Photo/Lee Jin-man)

South Korean President Moon Jae-in, right, and Saudi Crown Prince Mohammed bin Salman view an honor guard during a welcoming ceremony at the president... South Korean President Moon Jae-in, right, and Saudi Crown Prince Mohammed bin Salman view an honor guard during a welcoming ceremony at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

South Korean President Moon Jae-in, right, shakes hands with Saudi Crown Prince Mohammed bin Salman during a meeting at the presidential Blue House, W... South Korean President Moon Jae-in, right, shakes hands with Saudi Crown Prince Mohammed bin Salman during a meeting at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

South Korean President Moon Jae-in, right, shakes hands with Saudi Crown Prince Mohammed bin Salman during a meeting at the presidential Blue House, W... South Korean President Moon Jae-in, right, shakes hands with Saudi Crown Prince Mohammed bin Salman during a meeting at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

South Korean President Moon Jae-in, right, talks with Saudi Crown Prince Mohammed bin Salman, fifth left, during a meeting at the presidential Blue Ho... South Korean President Moon Jae-in, right, talks with Saudi Crown Prince Mohammed bin Salman, fifth left, during a meeting at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

South Korean President Moon Jae-In, right, and Saudi Crown Prince Mohammed bin Salman walk to view an honor guard during a welcoming ceremony at the p... South Korean President Moon Jae-In, right, and Saudi Crown Prince Mohammed bin Salman walk to view an honor guard during a welcoming ceremony at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

South Korean President Moon Jae-in, right, and Saudi Crown Prince Mohammed bin Salman view an honor guard during a welcoming ceremony at the president... South Korean President Moon Jae-in, right, and Saudi Crown Prince Mohammed bin Salman view an honor guard during a welcoming ceremony at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)

CORRECTS DAY South Korean President Moon Jae-in, right, and Saudi Crown Prince Mohammed bin Salman view an honor guard during a welcoming ceremony at ... CORRECTS DAY South Korean President Moon Jae-in, right, and Saudi Crown Prince Mohammed bin Salman view an honor guard during a welcoming ceremony at the presidential Blue House, Wednesday, June 26, 2019, in Seoul, South Korea. Bin Salman is visiting South Korea for two days - the first time by an heir to the throne of Saudi Arabia since 1998. (Chung Sung-Jun/Pool Photo via AP)