This is source I found from another site, main source you can find in last paragraph
Global politics dominate the minds of traders and investors on the open this morning, and it will do going into US trade as well, with expectations that we could get colour on the Republican blueprint on tax reform. That said, there has been talk the announcement is to be pushed back to Wednesday, which makes sense given Donald Trump is scheduled to speak in Indiana.
1. What's ahead this week: Amid a strong step-up in the rhetorical war between Donald Trump and Kim Jong Un (and other NK officials), and growing divide between Trump and various US sport codes, US tax reform should be a clear dominant catalyst for sentiment this week in my opinion. That said, Janet Yellen's speech tomorrow (amid a raft of Fed speakers due this week) could give clarity on her stance around a December rate hike and markets will pay focus to this event risk. In the immediate short-term though, markets are focusing on the results of the German and New Zealand elections, where both have resulted in a prolonged period of negotiations ahead to form coalition governments.