MOSCOW (AP) - Russia warned Wednesday it would quickly take "retaliatory measures" if the U.S. and its allies reject its security demands and continue their "aggressive" policies, ratcheting up pressure on the West amid concerns that Moscow is planning to invade Ukraine.Russia has repeatedly denied it has any such designs, but the United States and its NATO allies are worried because Russia has massed an estimated 100,000 troops near Ukraine's border and launched a series of war games in the region.At the heart of the standoff are questions about Ukraine's future: Russia has demanded guarantees that NATO will never admit the country and other ex-Soviet nations as members and that the alliance will roll back troop deployments in other former Soviet bloc countries.
Some of these, like the membership pledge, are nonstarters for NATO, creating a seemingly intractable stalemate that many fear can only end in a war.Speaking to lawmakers Wednesday, Russian Foreign Minister Sergey Lavrov said he and other top officials will advise President Vladimir Putin on the next steps after receiving written replies from the United States to the demands.