Leaders will meet for three hours of talks at 70th anniversary summit overshadowed by rows.
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War veteran Vasyl is HIV-positive. He never told anyone, but was shocked by their attitude to sex.
For the first time Denmark puts mineral-rich Greenland top of its national security agenda.
The Russian president meets widows of engineers killed in a nuclear rocket engine blast.
Russia has lost more than £130m in theft from a key space project cherished by President Putin.
Investigators say phone-taps suggest top Moscow officials had broad influence over separatists.
Footage shows a launch from an underwater position in the White Sea, Russia's defence ministry says.
Russia says it has successfully launched a missile from a nuclear-powered submarine in the White Sea.
Some European countries have suspended arms sales to Turkey, so where does it gets its weapons?
Alexei Leonov, who died on Friday, could have been the first human to land on the Moon.