Prime Minister Narendra Modi said India is ready to expand its use of renewable energy as a way to reduce greenhouse gas pollution, a signal that his government is moving toward joining an international deal on global warming.

After a meeting with U.S. President Barack Obama in New Delhi, the prime minister said that his nation along with all others has an obligation to act on reducing the fossil-fuel emissions blamed for damaging the climate.

The remarks represent a shift in India's tone on global warming. It previously emphasized the historical responsibility of industrial nations for creating the problem, and the Indian government has been ambiguous about whether it will adopt domestic targets for reducing greenhouse gases. Modi's comments suggest he's ready to work with Obama on a deal in Paris in December that would for the first time require all nations, rich and poor alike, to restrain emissions.