This is evident in measures of policy uncertainty calculated from news stories in https://www.rba.gov.au/speeches/2019/sp-gov-2019-10-29.html  10/18  10/30/2019  Some Echoes of Melville | Speeches | RBA  leading media around the world (Graph 7). The sources of this uncertainty are well known.
The long list includes the trade and technology disputes between China and the United States, the Brexit issue, the ongoing tensions in the Middle East, the problems in Hong Kong and the tension between Japan and South Korea. Not surprisingly, these events are making businesses nervous and they are responding by putting off investment decisions.