From Tales of the American Empire:
George H. W. Bush and Manuel Noriega were partners in crime. As CIA chief and later Vice President, Bush worked with Noriega to control Central America. Noriega had a long career of violence as a solider and CIA operative in Panama. Noriega helped the CIA run a massive cocaine smuggling operation that produced millions of dollars each month to fund private CIA armies and enrich CIA players. He then demanded a larger share of cocaine profits while refusing to openly support the CIA’s effort to overthrow the popular government of Nicaragua.
As an American trained intelligence officer, Noriega collected “negative information” about both friends and foes. He used this to protect himself from an American coup or assassination by telling people this material would be released should something happen to him. Once newly elected President Bush and his team entered office, ousting Noriega was a top priority. This would be not be simple because Bush needed to ransack the entire nation to seize all evidence of his criminal activities. This invasion resulted in massive destruction and thousands of fatalities.