The provided evidence includes general information about Taiwan and Eswatini (Wikipedia entries for both), but none of the retrieved web search results or Wikipedia articles specifically mention a Taiwanese leader canceling a visit to eSwatini for the 40th anniversary of King Mswati III's accession and 58th birthday. The claim appears to be based on information not present in the provided evidence set.

The provided evidence includes general Wikipedia articles on Taiwan and Central America, but none of the retrieved sources list the specific set of countries mentioned (Belize, Guatemala, Haiti, Paraguay, etc.) as the complete list of countries recognizing Taiwan. The claim is not directly supported or refuted by the evidence provided.

One web search result suggests that the US decision to switch diplomatic recognition from Taipei to Beijing in 1979 was a turning point, and another web search result mentions that the US decision to switch diplomatic recognition from Taipei to Beijing in 1979 was a turning point. However, there is no direct evidence from multiple independent sources confirming that *many* countries maintain ties solely due to pressure from Washington. The evidence points to historical shifts (like the 1979 US decision) but does not establish a current, widespread consensus of pressure from Washington as the primary reason for maintaining ties.