What is the fine-grained topic of the following text: The US Vice President asserted that several nations in the Western Hemisphere are now backing Guaido and that others should follow suit.Continuing his attack against Maduro, Pence said that he was in power only due to Cuba's backing, adding that there was Iran's increased support as well. Only return the topic.
US Vice President's stance on international support for Guaido and Maduro