A nonprofit government watchdog is suing the Department of State seeking to force the agency to disclose email and text message records of its communications with environmental activist groups like the Sierra Club, Natural Resources Defense Council and World Wildlife Fund.

The suit follows two Freedom of Information Act requests for the documents concerning the Obama administration’s pledge with China last November to curb greenhouse gas emissions in the two nations and the upcoming United Nations summit later this year in Paris seeking a new Kyoto Protocol on global warming.