MOSCOW, March 27 (Reuters) - Decisions by NATO's summit next week will have a strong impact on prospects for restoring full relations between Russia and the Western alliance, Moscow's ambassador to NATO said on Friday.

"Russia has not made a final decision on restoring fully-fledged cooperation with NATO," the envoy, Dmitry Rogozin, told a news conference.

"We will read attentively the (final) document to be adopted by heads of state at this summit and, judging by what it says with regard to Russia, we will formulate our opinion."

NATO suspended relations with Russia after it fought a war with ex-Soviet Georgia last year to quell Tbilisi's attempt to retake the separatist Georgian region of South Ossetia. NATO has described Russia's actions as disproportionate and inadmissible.

On March 5, the alliance decided to resume dialogue with Russia despite objections from some of its newer East European members, but Rogozin described this as "not enough".

"We still believe that NATO's position in August was unacceptable," said the envoy, who has a reputation as a nationalist hawk in Russia. "Words, acceptable (for Russia) are needed in the NATO summit's final declaration."

The alliance, whose leaders will meet in France and Germany on April 3-4, views its dialogue with Moscow as an important element of regional and global security. It is especially interested in Russia's cooperation over supply routes to NATO troops fighting Taliban insurgents in Afghanistan.

However, NATO has said it remains critical of Russia's actions in Georgia, including Moscow's decision to recognise South Ossetia and another breakaway Georgian region, Abkhazia, as independent states.

POSITIVE SIGNS

The future of Russia-NATO ties strongly depends on the United States. President Barack Obama says he aims to 'reset' relations with Moscow, now at post-Cold War lows. He and Russian President Dmitry Medvedev will meet on April 1 in London on the eve of a Group of 20 summit of leading economies.

"I believe the April 1 meeting will be extremely rich in substance," Rogozin said. "We will see very serious decisions now being prepared by diplomats in both countries."

Rogozin said despite new rifts caused by the Georgia war, he saw progress in NATO's attitude to Russia, including over the issue of whether the alliance should ignore Moscow's strong objections and admit Georgia and ex-Soviet Ukraine as members.

"Ukraine and Georgia are now further from NATO membership than they were a year ago," he said." Rogozin said talks between the foreign ministers of NATO and Russia would take place some time between May 18 and June 6, depending on the schedules of Russia's Sergei Lavrov and U.S. Secretary of State Hillary Clinton.

He said that while resuming full ties with NATO as a whole, Russia was focused on relations with its most important members. "What is NATO? NATO has 4,000 bureaucrats and several AWACS," he said referring to airborne advance warning systems. "We prefer to deal with separate states with respectable armed forces."