Nissan still sees a partnership with a North American auto company as good for its long-term strategy, but the Japanese automaker isn't in any talks now, Chief Executive Carlos Ghosn said Thursday.

Nissan Motor Co. has a nine-year alliance with Renault SA of France, which Ghosn said was working well. He pointed to shared research costs on ecological technology such as electric cars and joint projects to build cars in new markets, including India and Morocco.

Ghosn, who is also Renault's chief executive, has long thought that adding a partner from North America to solidify its position there to its Asian-European alliance made sense, he said.