Speaking after a meeting with Russia's top diplomat Sergei Lavrov in Moscow on Tuesday, Rau said that the OSCE wanted to create a platform for talks to prevent crises such as that in Ukraine, news agencies reported.
He called for further dialogue to end the standoff, Poland's PAP news agency reported.
"We would like to create an informal platform for open political discussion between OSCE nations, which would allow for the discussion of mechanisms for stopping crises like the present one," Rau, who is serving as chairman of the OSCE, told reporters in the Russian capital.
Meanwhile, Russia's Lavrov declared that his country would continue its dialogue with the West on security issues and was ready for separate talks on intermediate-range nuclear missiles, the Reuters news agency reported.
He dismissed as "information terrorism" reports that Russia was planning an incursion into Ukraine, according to Reuters.
Rau was visiting Moscow in his role as Chairman-in-Office of the OSCE, reporters were told. At the same time, his trip marked the first time in almost a decade that a Polish foreign minister has visited Moscow, according to officials.
While in Moscow on Tuesday, Rau was also scheduled to visit a monument to the victims of political persecution during the Soviet era and meet with Nobel Peace Prize-winning journalist Dmitry Muratov.
Meanwhile in Warsaw, Polish government ministers were set to gather for a special meeting with President Andrzej Duda on Tuesday to discuss the West's standoff with Moscow over a military buildup amid warnings of an impending Russian invasion of Ukraine.
Russia has been massing troops and military hardware around Ukraine for weeks, fueling concerns among Western leaders that an invasion could be imminent.
Moscow has denied any such plans, but has demanded security guarantees from the United States and NATO. These include a ban on the alliance’s eastern expansion and a withdrawal of infrastructure from NATO’s eastern flank, news agencies have reported.
In 2014, Russia annexed the Crimea peninsula from Ukraine and then fomented a separatist conflict in that country's eastern Donbas region, leading to a wave of EU and US sanctions against Moscow and Russian officials.
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Source: PAP, gov.pl, Reuters