Russia and the United States have a good chance of reaching a new nuclear arms reduction deal before year's end, but other nuclear powers must join disarmament efforts, Russian President Dmitry Medvedev said in remarks released Saturday.

Medvedev also told Germany's Der Spiegel magazine he has been working well with his predecessor Vladimir Putin, and predictions of a rift between him and Putin _ widely seen as pulling the strings in Russia _ are overblown. The Kremlin released a transcript of the comments.

"No one must have any doubts that our 'tandem' has been working quite harmoniously," Medvedev said. "As you can see, predictions that we will have a falling out so far have failed to materialize."

The U.S.-Russian arms control talks are moving at a good pace, Medvedev said.

"We have every chance to agree on a new treaty, determine new (weapons) levels and control measures and sign a legally binding document in the end of the year," he said in remarks released by the Kremlin.

He sounded less upbeat about the prospect of the complete abolition of nuclear weapons.

Russia and the United States both say they are committed to negotiating a successor deal to their 1991 Strategic Arms Reduction Treaty. That arms reduction treaty has gradually slashed both sides' arsenals but is set to expire Dec. 5.

In July, U.S. President Barack Obama and Medvedev agreed that the current talks should reach an accord to reduce both countries' arsenals to between 1,500 and 1,675 nuclear weapons within seven years.

Medvedev told Der Spiegel that other nuclear powers have been reluctant to join in disarmament efforts.

"A nuclear-free world is our shared ideal for which we must aspire, but a road to that is difficult," he said. "It takes not just the United States and Russia renouncing nuclear weapons, but other countries as well."

Putin anointed Medvedev as his preferred successor and moved into the prime minister's job after the 2008 presidential election. Putin said in September that he and Medvedev would "come to an agreement" on who would run for president in the 2012 election, leading to speculation that the two would decide on a predetermined winner.

Medvedev maintained that Putin meant to say they would discuss who should run for president to "avoid elbowing each other."

"He did not say that we would decide between us who will be the next president," Medvedev said. "This would be ridiculous."

"I do not wish to one day find myself and Vladimir Putin resembling the aged leaders from the Soviet Communist Party Politburo standing on Lenin's Mausoleum in similar coats and hats." Continued...