Russia on Friday unveiled proposals to contain the United States and NATO in the former Soviet Union and Eastern Europe, calling for urgent negotiations with Washington as it amasses forces near Ukraine.
The United States said it was willing to talk but stated upfront that it disagreed with much in the far-reaching proposals, as it renewed warnings of painful reprisals if Russia invades Ukraine.
Russia released unfinished security documents - an unusual move in diplomacy - that call for US-led NATO alliance not to bring in new members or establish bases in ex-Soviet countries.
Deputy Foreign Minister Sergei Ryabkov said Russia was ready to hold urgent security talks with the United States "as early as" Saturday.
"We are ready to immediately, even tomorrow - literally tomorrow, on Saturday - go for talks with the US in a third country," he told reporters, suggesting Geneva as a venue.
In Washington, a senior official said the United States expected to respond "sometime next week" to Russia on a format for talks but made clear it was not enthusiastic about the proposals.
"We are prepared to discuss them. That said, there are some things in this document that the Russians know will be unacceptable," the official told reporters on condition of anonymity.
"If there is any further aggression against Ukraine, that will have massive, massive consequences and will carry a high price," the official said.
White House Press Secretary Jen Psaki noted that the United States has negotiated with Moscow on strategic concerns for decades but said it would only act in concert with NATO allies.
"There will be no talks on European security without our European allies and partners," she told reporters on board Air Force One.
'Legal guarantees'
The West says Moscow has readied some 100,000 troops for an imminent attack on Ukraine, which has been battling a pro-Moscow insurgency in its east since 2014.
Russian President Vladimir Putin denies planning an attack and blames NATO for the rise in tensions, demanding "legal guarantees" the alliance will not expand eastwards.
The draft document addressed to NATO says its members should "commit themselves to refrain from further enlargement, including the accession of Ukraine as well as other states".
It also insists that alliance members not conduct military activity in Ukraine or other countries in Eastern Europe, the South Caucasus and Central Asia.
Moscow and NATO, the document said, should limit the deployment of missiles, set up an emergency telephone hotline and also work to "prevent incidents" in the Baltics and the Black Sea.
Russian President Vladimir Putin Source: AAP
The draft said Washington should block NATO membership of any former Soviet country - a reference to Ukraine as well as Georgia, which have both infuriated Moscow after Western tilts.
The United States and European countries have kept the door open but also made clear that Ukraine's membership in NATO is not on the cards, much to Kiev's annoyance.
'Impossible' demands
In the draft, Russia said the United States should agree not to establish military bases in ex-Soviet states, including in Central Asia, which Moscow sees as its backyard and sphere of influence.
The United States leaned heavily on military facilities in ex-Soviet Uzbekistan and Kyrgyzstan to coordinate operations in Afghanistan, where it recently withdrew troops after two decades.
Political analyst Konstantin Kalachev described Russia's list of demands as "unrealistic and impossible" for the United States and NATO to meet.
These "spheres of influence are a thing of the past".
US President Joe Biden met Mr Putin in Geneva in June, with the two leaders agreeing to seek more stable relations, but Western powers have also stood firm on backing Ukraine amid the war that has claimed 13,000 lives since 2014.
US President Joe Biden has warned Mr Putin of "sanctions like he's never seen" if an offensive is launched.
British Prime Minister Boris Johnson, in a call Friday with Ukrainian President Volodymyr Zelenskyy, vowed to use all "diplomatic and economic powers" to prevent any aggression by Moscow.
Washington helps train Ukrainian forces and has committed more than $2.5 billion to bolster a military that crumbled in the face of Russia's annexation of the Ukrainian peninsula of Crimea in 2014.
