Russia's President has said that war with neighbouring Ukraine was unlikely.
"I think that such an apocalyptic scenario is unlikely and I hope this will never happen," he told Russia State television.
Vladimir Putin was asked if he expected a war between Russia and Ukraine. A transcript of the interview was published on the Kremlin website. Putin also said he did not see the need for another meeting with France, Germany and Ukraine on resolution of the conflict in eastern Ukraine.
Ukraine's military said two of its soldiers had been killed and 10 wounded in the past 24 hours, signalling that fighting has not stopped to allow a truce deal to be implemented.
Spokesman Valentyn Fedychev said Ukrainian forces had been shelled 27 times in the past day.
Fighting has diminished in eastern Ukraine since rebels defied a ceasefire to capture the town of Debaltseve last Wednesday, but Kiev says it is still not quiet enough to allow it to withdraw artillery from the front.
The Ukrainian people are furious that the recent ceasefire has collapsed and their homes and lives are continuing to be destroyed.
Following today's explosion in Kharkiv, where two people were killed, the locals of Danetsk have predicted revenge and a 'blood bath' if the fighting does not stop.
ITV News Correspondent Martin Geissler reports.
Ukraine has said that it feared unrest could spread beyond eastern areas held by pro-Russian separatists, after an explosion killed two people at a memorial rally in Kharkiv on Sunday.
Four people, who had been trained in Russia, have been arrested following the blast, which killed a policeman and a demonstrator at the rally in the biggest city in the east, 200 km from the war zone.
A week after a ceasefire agreement that Moscow-backed rebels ignored to capture a strategic town, Kiev and its Western allies are trying to determine whether the separatists will now halt, or advance deeper into territory the Kremlin calls "New Russia".
Footage claiming to show the moment a bomb exploded at a peace rally in Ukraine has emerged.Read the full story ›
A police officer is among the two people killed in a bomb explosion at a march in Ukraine's second-largest city Kharkiv, officials say.
Police have detained an unspecified number of suspects following a bomb attack at a peace march in Ukraine which left two people dead, authorities say.
At least two people have been killed after an explosive device was thrown from a car into a crowd attending a peace rally in Ukraine, officials say.
Police said 15 people have also been wounded in the incident in Ukraine's second-largest city Kharkiv, which lies just outside the conflict zone.
An unnamed regional prosecutor quoted by Reuters said three were killed but the figure was later revised to two.
Television footage showed emergency service workers carrying a body into the back of an ambulance in the aftermath of the attack.
At least one person has died and multiple others have been wounded after an explosion at a peace march in the Ukrainian city of Kharkiv, officials say.
Ukrainian police said it was being treated as a "terrorist act" after an an "unknown explosive device" was found.
The march was one of several events marking the deaths of protesters who died during an uprising against the former pro-Russian president Viktor Yanukovych last year.
The reported explosion comes amid efforts to maintain a ceasefire between Ukrainian government troops and pro-Russian separatists.
Russia will face more sanctions if they continue to "destablise" Ukraine, William Hague has said.
The former Foreign Secretary told the BBC that Russian President Vladimir Putin is facing a "huge long-term price" for his country's alleged role in supporting separatists in eastern Ukraine.
"The costs to Russia over this behaviour are mounting and will get even higher," he told the BBC.
"If Russia continues to destabilise Ukraine there will be higher sanctions."
Mr Hague said the UK was not planning to send arms to the Ukrainian government following calls from ex-defence secretary Liam Fox.
"We are not planning to send arms to Ukraine - we want to see a diplomatic solution. You have to think very carefully before you send arms into a conflict."