U.S. Secretary of State Marco Rubio will skip a meeting of foreign ministers from the leading rich and developing nations, known as the Group of 20, that starts on Thursday.

Amid diplomatic tensions between host South Africa and the Trump Administration, the U.S. will be represented at a meeting of foreign ministers by the acting ambassador to South Africa.

Russian Foreign Minister Sergey Lavrov has arrived in South Africa for a two-day meeting of the Group of 20 nations, where top European diplomats are expected to reinforce their support