US Secretary of State nominee Marco Rubio says diplomacy with Cuba is unlikely to succeed, as President Donald Trump raises the possibility of military action. According to reports, Trump argues that US presidents have discussed intervention in Cuba for decades and says he may be the one to act. Rubio’s comments focus on the US view of Cuba’s government and national security. He says the White House is heavily oriented toward toppling Cuba’s socialist government, framing this as necessary to address security risks. Rubio also urges Cuban officials to negotiate, saying Havana will not be able to outlast the Trump administration and warning that time may be running out. The reporting describes a context of heightened pressure on Cuba, combining skepticism from Rubio about diplomatic prospects with Trump’s renewed threats. Taken together, the articles portray a US approach that emphasizes regime change while keeping open the possibility of force, even as it encourages Cuba to strike a deal. No specific agreement terms are outlined in the provided summaries.