On the other hand, writers like John Conard and Holison are highly critical of the role of western imperialism in Asia and Africa. They associate imperialism with exploitation, misery, poverty, cruelty, conversion, degradation and racial segregation. Holison says that imperialism was 'rapacious and immoral'.
There is no official termination date for the sustainability of an open bottle of cognac. A guide that you can hold: a half-full bottle of cognac is maintainable for about 3 years. Even afterwards this period the Cognac will remain safe to consume, only the quality is lower. For example, you can use it for cooking.
These are gross generalizations. The longevity of an opened bottle depends greatly on the overall quality and concentration, too. A great red Burgundy can blossom after four or five days with exposure to a bit of air - but I have to stress the word great, as in a $90-plus grand cru. It also depends strongly on how much wine is left in the bottle. The higher the fill (and thus smaller the air pocket), the longer the wine will last.