A British expat who became a US television host has been shot dead by his son-in-law at his home in Louisiana.
The new president of the European Council could be "very important" for David Cameron.
The family of a firearms instructor accidentally shot dead by a nine-year-old say they "feel sorry" for the girl.
Pro-Russian rebels have advanced against government forces during fighting around the airports in Luhansk and Donetsk, as well as moving toward the strategic port of Mariupol.
Separatists also killed two sailors when a Ukrainian naval vessel was hit by artillery fired from the shore - the first such attack since the conflict began in April.
ITV News' Europe Editor James Mates reports from Donetsk:
Nato leaders meeting this week are expected to create "a very high-readiness force" to deal with Russian aggression in Ukraine.
The new force could include several thousand troops that will be mobilised for action in any potential 'hotspot' within 48 hours, according to officials.
Nato already has a rapid reaction force but US President Barack Obama and other leaders meeting for a summit in Wales this week are expected to create a new force that would be able to respond more quickly to a crisis.
– Nato Secretary-General Anders Fogh Rasmussen
We will develop what I would call a spearhead ... a very high-readiness force able to deploy at very short notice. This could include several thousand troops, ready to respond where needed with air, sea and special forces support.
The family of the first Briton to catch the deadly Ebola virus say he seems to be "pretty well". William Pooley's parents Robbie and Jackie said the 29-year-old was showing "good signs" - including ordering a bacon sandwich for breakfast.
– Robin Pooley speaking to the BBC
He's a lot better than we thought he might have been, we've only got what the medics tell us, but he's got a little step in there which the physio gave him so he can rebuild his strength, that in itself is a good enough sign I think, but he seems to be pretty well actually.
The volunteer nurse was flown back to the UK for treatment after contracting the virus in Sierra Leone. Mr Pooley, who comes from the small village of Eyke in Suffolk, was airlifted back to Britain by a specially equipped C17 RAF jet, and is being treated in a specialist isolation ward at the hospital in Hampstead.
David Cameron says Russia appears to be trying to force Ukraine "to give up its democratic choices at the barrel of a gun".
Speaking in the House of Commons, the Prime Minister said the presence of Russian soldiers on Ukrainian soil is "completely unjustified and unacceptable".
Pro-Russian rebels have said they would be prepared to stay part of Ukraine if they were granted "special status," Russian news agencies report.
In a statement the separatists said one of their key conditions would be for Kiev to immediately end its military offensive.
Ceasefire talks were going ahead today but no major decision was expected.
Andrei Purgin, one of the leaders of the self-proclaimed Donetsk People's Republic, said: "This is the beginning of the process. We have come with proposals to find common ground and end the war and people dying."
The European Union could limit gas use to protect household energy this winter if Russia cuts off its gas supply to Europe over the Ukraine crisis.
Kiev claims Russia has threatened to halt its supply over fears Ukraine could siphon off energy destined for the EU as the pipeline runs through the country.
An EU source told Reuters: "In the short-term, we are very worried about winter supplies in south west Europe. Our best hope in case of a cut is emergency measures to protect households."
On Wednesday the EU is expected to discuss whether to impose new sanctions on Russia if they fail to pull its forces out of Ukraine. If it agrees to do so the sanctions are likely to be financial.
Russia has called for peace in Ukraine as it tries to push for a ceasefire.
Russia foreign minister Sergei Lavrov urged for a new round of talks on the issue and said: "We call for an exclusively peaceful settlement of this severe crisis, this tragedy."
Pro-Russian separatist leader Andrei Purgin said they were willing to discuss the exchange of prisoners and a temporary ceasefire.
Fighting in eastern Ukraine between separatists and the Ukrainian government has been going on since Russia annexed Ukraine's southern peninsula of Crimea in April.
German Chancellor Angela Merkel has said doing nothing in response to Moscow's actions in Ukraine is "not an option".
She said further sanctions should be imposed even if they impacted on German companies.
"Accepting Russia's behaviour is not an option. And therefore it was necessary to prepare further sanctions," she said.
Seven Ukrainian soldiers have been killed in the past 24 hours, a military spokesman has confirmed.
Earlier the military said Ukrainian paratroopers were fighting a Russian tank battalion in a bid to hold onto the airport outside Luhansk, a separatist stronghold on the border with Russia.
But military spokesman Andriy Lysenko said Ukrainian forces have now pulled back from the airport after being ordered to do so.
An Australian man has been charged with sexually abusing twins he fathered with a Thai surrogate when they were aged under 10, according to ABC News.
The man, who cannot be identified, has been charged with indecent dealings of a sexual nature with the twins and possessing child abuse material which was discovered after a raid on his property.
The man denies all of the allegations against him, the report said.
Australian child welfare authorities are now looking into sending the children back to Thailand to be with their surrogate and biological mother.
However, the twins "consider themselves to be fully Australian" and "don't know that they are half Thai or have any connection to Thailand", Childline Thailand's Ilya Smirnoff told the website.
He added that paedophiles were "abusing" the surrogacy system in Thailand. The country is currently working on new laws banning commercial surrogacy.