by Sebastian Smith with Anna Smolchenko in Moscow WASHINGTON, United States (AFP) — US President Joe Biden warned President Vladimir Putin on Tuesday of “strong” Western economic blowback against any Russian attack on Ukraine, while the Kremlin leader demanded guarantees that the NATO alliance keep clear of Russia. The two leaders met by video link in a two-hour summit seen as a vital chance to defuse tension on the Russian-Ukrainian frontier, where Russia has deployed […]