Brazilian President Jair Bolsonaro said on Tuesday he wants French President Emmanuel Macron to withdraw the "insults" made against him before he considers accepting a $20 million offer from the G7 nations to help fight forest fires in the Amazon.

The two leaders have become embroiled in a deeply personal and public war of words in recent days, with Bolsonaro mocking Macron's wife and accusing the French leader of disrespecting Brazil's sovereignty. Macron has called Bolsonaro a liar, and said Brazilian women are probably ashamed of their president.

The fires in the Amazon have created a major crisis for Bolsonaro's far-right government. The Brazilian leader is losing popularity at home and finding himself increasingly isolated on the global stage over his response to blazes that threaten what many view as a key bulwark against global climate change.