United Kingdom

I am impressed how fast Britain can change PMs but given they are tied to what may be a now unpopular ruling majority party and its related policies (or lack thereof) leaves the average person essentially voiceless until the next general election. Also leads to greater frustration on the parts of Ireland and Scotland that could further boost push for seceding from the UK. And King Charles does not have the strong standing his mother had which could encourage the Commonwealth nations to consider leaving the fold. The US is not the only one with political problems.