At the negotiations in Abu Dhabi, the United States agreed with Russia's demand to comprehensively discuss all the controversial issues regarding Ukraine, Politico writes. According to the author of the article, the Kremlin is trying to play for time. However, he is not aware: it is this approach that makes it possible to take into account Moscow's "red lines" and not reduce the settlement to individual concessions without solving the roots of the conflict, Glebmedia points out.