The European Union’s airline emissions plans have upset India, in a row that could stall global climate change talks. The European law that charges airlines over their emissions is set to come into play next year.

India’s environment minister said on Wednesday the effect on emerging economies was “unacceptable.” According to Reuters, Jayanthi Natarajan said on Wednesday: “For the environment ministry, for me, it is a deal-breaker because you simply cannot bring this into climate change discourse and disguise unilateral trade measures under climate change.

“I strongly believe that as far as climate change discussions are concerned, this is unacceptable.”

One of the biggest issues is that non-EU flights will have to pay for their whole flight and if flying from outside Europe are likely to pay much more than their European counterparts.

While the US has agreed to participate in the scheme China has barred its carriers from joining. Any airline that does not comply with the EU law faces fines of €100 for each tonne of carbon dioxide emitted.