
In the immediate aftermath of President Trump’s decision to leave the Paris agreement, the sixth largest economy of the world, California, signed an agreement with China to fight climate change.
While non-binding, such cooperation represents a “trickle-up” approach to global climate change governance and is part of a wave of initiatives from non-state actors including civil society, the private sector and local authorities.




Two weeks out from the Hamburg Summit, there are plenty of warning signs that this may be the most challenging G20 meeting since G20 leaders first met in Washington in 2008. Then, the global economy stood on the precipice of a dramatic collapse. Staring down the barrel of a long and protracted global economic recession on an unprecedented scale, G20 leaders opted for cooperation via a massive collective global economic stimulus program.