Ukraine is a small country compared to Russia - but it punched above its weight when it came to political influence within the Soviet Union.
The summit on July 16 comes as US allies in Europe seek to isolate Russia over various issues such as the Ukraine and the Skripal poisoning case in the UK and following a Nato summit.
Despite the flawed electoral process in the Russian election, Vladimir Putin's popularity remains high. Russia has Putin in its future as far as the eye can see but that does not bode well for the country's economy, or for peace in the region.
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