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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.
A man has stabbed three children to death and injured several others at a primary school in China.
The suspect entered the school in Shiyan city of Hubei province on Monday, the first day of term after the summer break, and stabbed a teacher and eight students.
The man, believed to be a parent of a student, reportedly attacked the children because the school refused to allow his daughter to start the new term as she had not completed her homework.
He killed himself by jumping out the school building to evade arrest, state media said.
Russian President Vladimir Putin has said he "hopes common sense will prevail" in the West over sanctions imposed on his country.
European Union leaders have agreed to ask the European Commission to draw up more measures against Moscow after accusations Russia is sending troops into Ukrainian territory.
A police van thought to contain Brett and Naghemeh King, the parents of critically-ill five-year-old Ashya, has arrived at court in Madrid, Spain.
Ukrainian President Petro Poroshenko has accused Russia of launching a "direct and open aggression" against Ukraine.
He added there would be "high-level personnel changes" within the Ukrainian armed forces in light of the events of the past few days.
This is in spite of ceasefire negotiation talks due to take place later today.