The two-day meeting involving Asian countries and members of the Organisation for Security and Co-operation in Europe comes as tensions flare between the West and Moscow over Ukraine, where pro-Russian forces are fighting against regular troops.
It also comes as Japan and some Southeast Asian countries voice disquiet about what they say is intimidation by China over disputed territories in the East China Sea and the South China Sea.
"More vigorous measures are needed for the organisation to respond to the violations by the Russian Federation of the OSCE policy principles and commitments," Sergiy Kyslytsya, Ukraine's Deputy Foreign Minister, said in the opening session of the conference.
"They also indicated the need for readjustment of... mechanisms and instruments for crisis prevention and crisis management," he said.
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Envoys from Russia did not speak at the opening session, which was open to reporters.
The OSCE - a Vienna-based body that was first tasked with securing peace during the Cold War - has played a key role in the Ukraine crisis, sending 35 military observers to Kiev, and later sending monitors for the country's presidential election.
The embassy protest came in response to the deaths of 49 servicemen killed Saturday when pro-Kremlin rebels downed their military transport plane with weapons Kiev believes were supplied by Moscow.
"The security environments of Asia as well as Europe are becoming more inseparable and are increasingly severe," Japan's Deputy Foreign Minister Shinsuke Sugiyama said, noting that Prime Minister Shinzo Abe has recently held talks with European leaders and the head of NATO.