France and Ireland say they will not ratify a huge trade deal with South American countries unless Brazil does more to fight the fires in the Amazon.
French leader Emmanuel Macron says President Jair Bolsonaro lied to him about his position on climate change.
There is currently a record number of fires in the Amazon rainforest ̵
Environmental groups claim that the fires are related to Mr Bolsonroo's policies, which he denies.
European leaders also expressed dissatisfaction with the fires, with British Prime Minister Boris Johnson saying he was "deeply concerned" about the "impact of the tragic loss of these valuable habitats."
German Chancellor Angela Merkel called the situation a fire. .. shocking and threatening not only to Brazil and other countries concerned but to the whole world. "
Mr Bolsonaro said on Friday he was considering options for fighting fires, including deploying the military.
However, he accused Mr Macron of interfering with "sex profit, "and said earlier that calls to discuss the fires at the G7 summit in Biarritz, France – in which Brazil did not participate – showed a" wrong colonialist mindset. "
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Mr Macron and Irish Prime Minister Leo Varadcar now say they will not ratify the EU-Mercosur trade deal unless Brazil engages to protect the environment.
The trade deal – which took 20 years to reach talks – was negotiated between the EU and a South American bloc consisting of Argentina, Brazil, Uruguay and Paraguay.
It has been described as the biggest EU deal to date – and would reduce or eliminate trade tariffs on both sides by giving EU companies making industrial products and cars access to Mercosur and helping Mercosur countries export agricultural products, including beef, sugar and poultry to the EU.