According to a Reuters headline.

Pretty high stakes stuff over the next few weeks.

If a “grand bargain” is reached in Seoul (or before), the dollar would likely rally versus the developed currencies (because there would no longer be intervention by Korea, Singapore, Brazil, etc. and thus no reserve diversification) and fall versus emerging markets currencies. China would have a stronger currency and countries like Brazil could afford to let their currencies strengthen while still competing. If no agreement is reached, the opposite is quite likely.

For traders who like to trade options, being long volatility for the next month or so looks the way to go…