The answer to the missing blank above would be 'the Mongols'. The Mongols invaded Russia around 1300s, which arose to economic downfall and overall negative effect to Russia. Because of this, the Russian princes convened and fought to drive Mongols out of the country.
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The EU - setting the pace in international environment policy
European citizens enjoy some of the world's highest environmental standards. However, no matter how robust internal EU environmental legislation is, it cannot shield us from the negative consequences of trans-boundary and global environmental degradation, nor does it sufficiently reduce the impact of the EU's economic activity on natural resources worldwide. Today’s challenges are much more inter-related and we have to make sure that we achieve sustainable development in all of its three dimensions: environmental, social and economic.
Confronting the global challenges of climate change, biodiversity loss and biosafety, deforestation, air and water pollution, and chemicals management – to name but a few – requires real commitment and effective cooperation at the international level.
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