"There was nothing spontaneous. Everything was organized and each fiddler played his role." Military sources reveal how defections helped Russia take Crimea.
International investigators reported on Wednesday that a Russian missile downed the jet.
Kiev will send 10 train-loads of supplies to shore up mainland border with Crimea.
Ukraine's foreign minister said the sole communication takes place in Normandy meetings.
The Ukrainian presidential envoy suggests that Russia uses hostages like Somali pirates or ISIS militants.
Seven soldiers were killed and nine injured in eastern Ukraine, state officials report.
Vira Savchenko is currently stuck in Ukraine's consulate in Russia.
"Europe may not be able to cope with another frozen conflict," the ex-president said.
Members of Asker are set to reinforce the internal border with Crimea next month.
Russia's campaign in Syria has convinced Turkey to seek friends elsewhere.
The military exercise was the second in less than a month between the two.
Ukraine's security chief angered Moscow with suggestions of Russian responsibility.
Ukrainian President Poroshenko has said he is open to a prisoner swap for the pilot.
As many as 500 protesters gathered in central Kiev to support the captured pilot.
As part of the memorial service, Russian liberals had planned to screen a documentary about Maidan.
Jamala's "1944" tells the story of Moscow's persecution of Crimea's Muslims.
Uncle Sam appears as villainous Fasciston, while the patriarch looks suspiciously like Putin.
Donations for the project have opened and a sculptor has been appointed.
Two years on from the Maidan protests, Kiev's politicians are turning on each other.
The song, "1944," is inspired by Stalin's campaign of repression against the Tatars.
Petro Poroshenko says Russia continues to build bases and train rebels in Ukraine.