Welcoming the Greek prime minister, Alexis Tsipras, to Moscow at a time of badly strained relations between Russia and Europe, President Vladimir V. Putin on Wednesday declared that the visit “could not have come at a better time.” Mr. Tsipras, who is in tough negotiations with fellow European leaders over international financial assistance that Greece needs to avoid bankruptcy, arrived here Tuesday night. His visit has raised eyebrows across the Continent because of a perception that he may be trying to gain leverage by cozying up to Mr. Putin. Although Greek officials have said that Mr. Tsipras would not use the ... (full story)