Release of documents comes amid conjecture Trump may have authorized the agency to assassinate Venezuelan president

The White House under Gerald Ford tried to block a landmark Senate report that disclosed the CIA’s role in assassination attempts against foreign leaders and ultimately led to a radical overhaul in how the agency was held to account, documents released to mark the 50th anniversary of the report’s publication reveal.

The documents, dating from 1975, were posted on Thursday by the National Security Archive, an independent research group, as it sought to highlight the report’s significance amid conjecture that Donald Trump may have authorized the agency to assassinate Venezuela’s president, Nicolás Maduro, amid a massive US military build-up against the country.