Stay out of East Europe

Russia has 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 ready 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 security talks with the United States as early as Saturday.

President Joe Biden's national security advisor, Jake Sullivan, said the United States was "fundamentally prepared for dialogue" and would coordinate closely with European allies.

Another US official told reporters that the United States would respond "sometime next week" on a format for talks and said that Russia should already know that parts of the proposal will be "unacceptable" to Washington.

The West says Moscow has readied some 100,000 troops near Ukraine, which has been battling a pro-Moscow insurgency in its east since 2014.

Sullivan said the United States does not assess that President Vladimir Putin, who blames Nato for the rise in tensions, has made a decision on whether to invade.

The Russian 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.

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.

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.