The Nato Secretary General has accused Russia of continuing to destabilise Ukraine and called on Moscow to "step back from the brink".
Anders Fogh Rasmussen said that rather than helping to stabilise the situation, Moscow's support for Ukrainian separatists continued to grow "in scale and sophistication".
Nato has warned that Russia has put 20,000 troops near the border with Ukraine and could be planning a ground invasion.
Fogh Rasmussen added that Moscow "should not use peace-keeping as an excuse for war-making" and that the shooting down of flight MH17 was a tragic consequence of its "reckless" policy of supporting the pro-Russian separatists.
Nato Secretary General Anders Fogh Rasmussen and Ukrainian Prime Minister Arseny Yatseniuk have discussed a possible Western alliance support for Ukraine's defence capacity, a Kiev government statement said.
The two men discussed ways in which a proposed NATO trust fund could be used to support Kiev's defence ability in areas including command and control, communications and cyber-defence, the statement also said.
The Ukrainian government has suspended the ceasefire in the area surrounding the MH17 crash site after the recovery mission was halted yesterday, Reuters have reported.
The Netherlands is halting the operation to recover victims and debris of MH17 because of fighting in eastern Ukraine, the Dutch prime minister has said.
Mark Rutte told journalists in The Hague the risk posed to the team of 70 Australian, Dutch and Malaysian experts was too great to continue working in the area.
"The security situation in eastern Ukraine and the MH17 crash site has worsened by the day," Rutte said. "That is making it impossible for experts to do their work."
He said it made no sense to continue the operation under the current conditions.
The family of MH17 victim Liam Sweeney - one of two Newcastle United fans killed in last month's plane crash - have said they are "happy and relieved to be getting (him) home" after his body was identified.
Tributes were paid to Liam Sweeney and John Alder, who were travelling across the world to see their team play during a pre-season tour of New Zealand.
Liam Sweeney's father Barry later called for the bodies of his son and the other victims to be returned to their families in the aftermath of the tragedy.
Today's statement from the family read:
We are happy and relieved to be getting Liam home and hope that we can now move forward.
Our thoughts are with John Alder's family and the families of the other 296 victims.
We would ask that we are given some time and privacy to grieve as a family.
The anguish of a mother and father whose three children died when Malaysia Airline flight MH17 was shot down over Ukraine was laid bare at an emotional memorial service in Australia.
A thousand people attended the service at Perth in Australia, to hear the children's parents speak of their loss.
ITV News reporter Ria Chatterjee reports.
This video is now their parent's most cherished possession but at the time it was filmed no one could predict what would happen.
Mo, Evie and Otis Maslin, aged 12, 10, and eight, all died on flight MH17 along with their grandfather Nick on July 17.
In what is now their last message, the happy and smiling youngsters ride their bikes and swing on a roundabout telling their auntie they will see her next year.
The video was played at a memorial service for them in Australia earlier today.
The mother of the three Australian children killed on flight MH17 told a memorial service her "arms would always be reaching for them."Read the full story ›
Pro-Russian separatists killed at least 10 Ukrainian paratroopers in an overnight ambush in the region of east Ukraine where a Malaysian airliner was brought down, government forces have said.
The rebels said they had "captured good trophies" and pushed back government forces around the town of Shakhtarsk, where Kiev said a paratrooper unit moving from one base to another had come under mortar and tank fire.
Shakhtarsk is close to the rolling fields where Malaysia Airlines flight MH17 came down on, and fighting has raged around it for several days as the Ukrainian army tries to quell the separatist rebellion.
More than 60 experts, including some from Australia and the Netherlands, have started recovery work on the MH17 crash site in eastern Ukraine, monitoring body the OSCE says.