The US State Department officials announced late Friday its intention to work with Congress to approve a $1 billion assistance package for Colombia, as the new right-wing president there took office. "As a cornerstone of this renewed partnership, the United States, working with Congress, intends to announce $1 billion in assistance as part of a security package to support President (Abdelardo) de la Espriella's administration in achieving our shared goals," the statement said. The announcement came shortly after De la Espriella vowed to restore order and eradicate "narco-terrorists" in a fiery first speech as leader on Friday. Read moreWill Colombia's right-wing hardliner De la Espriella be able to govern? The US-backed millionaire flew by helicopter to address soldiers in a military garrison after his inauguration in the southwestern city of Cali. His mandate marks a sharp turn right for the Andean nation, with the 48-year-old keen to cozy up to Washington and come down hard on Colombia's patchwork of armed groups. "There will be no room for maneuvers that undermine the stability of the nation," the president, who adopted a stiff military salute on the campaign trail, told hundreds of soldiers. He pledged to "relentlessly defeat narco-terrorism," adding that "the option of dialogue is completely exhausted" -- a reference to the former administration's spluttering peace talks with guerrillas. The first thing on his to-do list, he said, was to join US President Donald Trump's regional anti-cartel alliance known as Shield of the Americas.