The following are analysts' comments on agreements reached on Monday between U.S. President Barack Obama and Russian President Dmitry Medvedev.

Masha Lipman, Political Analyst, Carnegie Moscow Center

"On Afghanistan, it's undoubtedly substantial progress for Russia to allow the United States to over-fly its territories and to send munitions, it is certainly progress and clearly an act of goodwill, although obviously Russia will benefit if the U.S. operations succeed. ...

This article was originally published in Reuters.