Obviously the destinies within a country at any given time will change significantly each day, due to advances in technology which allow us to travel quickly across the globe. The point here is that predictive astrology operates on an individual and collective level and therefore is able to equate to the differences between an individual and collective assembly such as a nation. Charting a nation's destiny is identified through the use of solar activity relating to the combined destinies of individuals collected together at any given moment. The boundaries of a nation are drawn in the skies prior to the man-made reflection that exists on our world.
On political astrology the destinies of the individuals most involved, that is those in government, have already been designed to produce a specific result. Predictive astrology identifies this by recognises the individuals brought together combining their destinies and thereby the outcome of events.
The most questionable assertion predictive astrology appears to make is that nothing is unpredictable. However, predictive astrology by its very essence merely states that certain results will occur when a combination of individuals come together at a certain time and place whether that has to occur in the form that it does is unclear. It may be that a nation's destiny will be what it has to be as decreed by the solar sky, but how and who achieves that destiny might be the one unpredictable factor because an individual will not alone make a nation commit to something, there also needs to be thousands of other individuals supporting the lead individual and only then can a nation take the steps towards its destiny. Predictive astrology works with combinations of destinies rather than just one and is therefore much harder to accurately forecast, because interpretations can mislead. However predictive astrology like any science continues to develop and may ultimately reveal a more accurate way to interpret what has been granted us to achieve an understanding of how the future is intended to develop.