Russian President Dmitry Medvedev has accepted an invitation to attend a meeting with NATO leaders in Portugal in November.

Medvedev said at a summit with the leaders of France and Germany on Tuesday that he will go to the NATO-Russian Council summit in Lisbon on Nov. 20.

Anders Fogh Rasumussen, the NATO secretary general, said he was pleased Russia accepted his invitation, calling the summit "an important opportunity to deepen and broaden the political dialogue and practical co-operation between the NATO-Russia Council members [and] to enhance our shared security."

German Chancellor Angela Merkel said she was pleased at Medvedev's "basic willingness to participate."

Leaders of NATO countries, including Prime Minister Stephen Harper and U.S. President Barack Obama, are expected to attend the summit. Russia is not among the 28 members of the North Atlantic Treaty Organization but is considered an important ally on security issues.

With files from The Associated Press