Former US president Barack Obama on Saturday took a new swipe at his successor Donald Trump over the Paris climate accord at a meeting with business leaders in the French capital.
Obama also vouched for the superiority of female leadership as "men seem to be having some problems these days", alluding to the sexual assault and harassment scandals currently engulfing the United States.
Speaking to a group of communications and media leaders as well as financiers and academics known as Les Napoleons, Obama regretted what he called a "temporary absence of American leadership" on climate change.
He was referring to Trump's threat to withdraw from the 2015 Paris climate accord, the day after making similar remarks during a visit to New Delhi.
Trump has said the accord is crippling US business and has called for the agreement to be renegotiated.
Asked to list leadership qualities for the future, Obama advocated "more focus on putting women in power, because men seem to be having some problems these days."
"Not to generalise, but women seem to have a better capacity than men do, partly because of their socialization," said the 56-year-old Democrat who left office in January.
Obama also used the occasion to hone his post-presidential vision of hope and change as he seeks to build support for the foundation he launched in September.
"If we can adapt to change we can make extraordinary progress. Hope is not being blind to problems," Obama said. "Hope is facing problems and then still believing that we can work them out."
He insisted that the world is "healthier, wealthier and less violent than at any time in human history", with "only a few things that are irreversible."