The ongoing turmoil in Ukraine has frequently been compared to the Yugoslav crisis of the early 1990s — and, indeed, there are many similarities.

But when it comes to understanding why the conflict between Ukraine's government and Russian-backed separatists has persisted — and why, after a year of increasingly brutal fighting, a resolution seems so remote — the differences are far more important.

Russian President Vladimir Putin's tactics in Ukraine do resemble those of Serbian President Slobodan Milosevic during the breakup of Yugoslavia. Putin's misuse of World War II references in propaganda, aimed at fueling intense Russian nationalism, is often said to be a cut-and-paste replica of Milosevic's disinformation campaigns in the early 1990s, which stirred up anti-Croat sentiment among Serbs.