The Paris Climate Agreement Pros And Cons The Paris Agreement was jointly signed by 195 parties responsible for nearly 90% of global emissions. However, some countries have yet to ratify the deal to make it mandatory, including some of the world`s worst polluters, such as Russia, Turkey and Iran. [2] Other important nations that have joined the Paris Agreement are: while the Paris Agreement has some clear and significant environmental benefits, it is not flawless. Below are some of the environmental advantages and disadvantages of the agreement. President Trump says the Paris Agreement will affect job growth, manufacturing and industries such as coal, natural gas, steel and cement. He expressed concern that U.S. commitments are superior to those of China and India and proposed that the U.S. consider renegotiating the agreement.