Ukraine

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.

A day after Russia seized three Ukrainian navy ships, parliament agreed to grant President Petro Poroshenko martial law for 30 days.

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.

Europe is experiencing a record outbreak of measles, a disease that has been vaccine-preventable since 1963. And in the EU, Romania is ground zero.

"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.

Prisoner Oleg Sentsov's lawyer says his client's health is worsening on a weeks-long hunger strike to win the release of more than 60 people Sentsov says are political prisoners in Russia.

Several women who have had trouble conceiving children have gone to a clinic in Ukraine that is doing something unique: using DNA from three different people to create a healthy embryo.

A clinic in Kiev, Ukraine, stirs controversy by making babies with DNA from three different people to help women who are infertile bear children. It's the only clinic known to be doing this right now.