By Reva Bhalla, Lauren Goodrich and Peter Zeihan Russian President Dmitri Medvedev reportedly will travel to Turkey in the near future to follow up a recent four-day visit by his Turkish counterpart, Abdullah Gul, to Moscow. The Turks and the Russians certainly have much to discuss. Russia is moving aggressively to extend its influence throughout the former Soviet empire, while Turkey is rousing itself from 90 years of post-Ottoman isolation. Both are clearly ascendant powers, and it would seem logical that the more the two bump up against one other, the more likely they will gird for yet another round in their centuries-old conflict. But while that may be true down the line, the two Eurasian powers have sufficient strategic incentives to work together for now. Russia's World Russia is among the world's most strategically vulnerable states. Its core, the Moscow region, boasts no geographic barriers to invasion.