It's not by chance that the countries' 4 1/2-year conflict has taken on a naval dimension. Moscow is further imposing on Kiev its annexation of Crimea.
The countries are trading blame over a maritime dispute in which Russia fired on Ukrainian vessels, injuring some sailors. The incident has sparked Ukrainian protests and an international backlash.
"Normal people collect stamps and I try to give my cheese to Putin," says cheesemaker David Sirota. "I know 100 ways to get into an event with Putin but every time, his security takes away my cheese."
The winner of the Sakharov Prize is Ukrainian film director turned activist Oleg Sentsov who is serving a lengthy prison sentence in Russia, accused of plotting to bomb sites in Crimea.
A once-secret underground naval base in Crimea designed to preserve Soviet submarines in case of a nuclear attack is now a museum with an anti-American message.
President Trump boasts that he's tougher on Russia than any other president. His administration has adopted some tough policies, even though Trump's rhetoric is almost always friendly toward Moscow.
Russia has repeatedly denied any involvement in the destruction of the Malaysia Airlines flight shot down by a Russian missile over eastern Ukraine in 2014, killing 298 passengers and crew.