Russian Prime Minister Vladimir Putin and his Polish counterpart Donald Tusk discussed in a phone conversation the investigation into the plane crash that killed President Lech Kaczynski, Russian government"s press service reported on Thursday.
The new Russian-U.S. strategic arms reduction treaty to be signed soon, contains no clauses making it easier for the U.S. to build a missile shield posing a threat to Russia, Foreign Minister Sergei Lavrov said.