US President Donald Trump has criticized Seoul in recent weeks over what he described as a lack of South Korean support for US efforts to pressure Iran. Talks between the allies' top diplomats came a day after South Korean President Lee Jae Myung ruled out sending troops to the Strait of Hormuz. Key points and original sources are listed below.

• US President Donald Trump has criticized Seoul in recent weeks over what he described as a lack of South Korean support for US efforts to pressure Iran.S1

• Talks between the allies' top diplomats came a day after South Korean President Lee Jae Myung ruled out sending troops to the Strait of Hormuz.S2