A Whimsical Pledge

Following on from the last piece, wouldn't this make an interesting addition to the pledgebank?

"I, Kevin Rudd, will commit my government to policies intended to make Australia a net carbon neutral emitter by 2050, but only if the leaders of nations whose combined GDP exceed five times that of Australia will agree to do so as well."

Why five? It worked for me once before!

Maybe I'll suggest it to the 2020 summit?

Oh well, one can hope!

(Update: there is another wiki where one may contribute such things: 2020 summit
or http://ozideas.wetpaint.com.
Take your pick)