The first impact of the Russian aggression on Ukrainian territory was the closure of airspace, paralyzing international traffic to and from the country. The suddenness of the attack has also put European countries in difficulty, as they were still hoping for a diplomatic solution. As a result, many European citizens were, last week, required to remain in "a safe place" until their potential evacuation is organized. They are now asked to find a way to flee Russia and Ukraine but the situation is very complicated.