These expeditions were likely driven by population growth and political dynamics on the home islands, as well as the challenge and excitement of exploring unknown waters.

这些探险很可能是受当地人口增长和政治局势的影响的，以及探索未知水域的带来挑战和刺激感。

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Instead, as will always happen, internal Russian political dynamics far outweighed any influence emanating from Washington DC.

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"The political dynamics often inside the U.S. are to find some simple solution, some silver bullet, " Cordesman says.

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He also knows the odds are against him, given political dynamics that significantly favor the Democrats and Barack Obama.

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