Japan and Russia have agreed to revive securitytalks.

and start discussing economic cooperation on disputed islands at the center of a row.

That has prevented them from signing a peace treaty formally ending the World War Two.

Emerging from a three-hour-long meeting withRussian President Vladimir Putin in Nagato on Thursday,.

Japanese Prime Minister Shinzo Abe said theyhad frank discussions about free travel by former island residents, economic activitieson the islands under a special system of both countries, and the peace treaty issue.

The western Pacific islands are known in Japanas the Northern Territories and in Russia as the Southern Kuriles.

However,.

citing the Kremlin,.

Russian media reports say such territorialtalks were not held,.

adding that the issue is not up for discussion.