In April 2019, then-US President Donald Trump issued a stern warning to Cuba, threatening a "full and complete embargo" and the "highest-level sanctions" if the communist nation did not immediately cease its military and security operations in Venezuela. This ultimatum came amidst a day of significant unrest in Venezuela, specifically an attempted military uprising on April 30, 2019, led by opposition leader Juan Guaidó against President Nicolás Maduro's government. The Trump administration, actively supporting Guaidó's efforts to oust Maduro, accused Cuba of propping up the Venezuelan leader with thousands of military and intelligence personnel. US National Security Adviser John Bolton stated that Cuban troops were keeping Maduro in power and warned that "all options" were on the table, including potential US military intervention. Secretary of State Mike Pompeo also claimed that Maduro had been prepared to leave Venezuela for Cuba but was dissuaded by Russia. Cuba vehemently denied the US allegations, maintaining that it did not have military or intelligence operatives in Venezuela and reaffirming its solidarity with the Maduro government. Trump's threat marked a significant escalation in the US campaign to pressure Havana over its role in the Venezuelan crisis, rolling back the Obama-era easing of Cold War sanctions on Cuba. While the Indian Express article (as indexed in search results) suggests a publication date of January 11, 2026, the verifiable historical events concerning Donald Trump's threats to Cuba regarding Venezuela, following an 'attack' or uprising in Venezuela, consistently point to April 2019. The 'Venezuela attack' refers to the attempted military rebellion and street protests that occurred on April 30, 2019. The article, therefore, refers to historical events from Trump's presidency (2017-2021).