Lithuania has closed its border with Belarus amid growing security concerns, citing repeated disruptions caused by helium balloons. The balloons, allegedly used by smugglers, have interfered with air traffic and affected tens of thousands of passengers, particularly in the capital, Vilnius. In response to these incidents and the perceived threat to its territorial integrity, Lithuania is considering invoking a key provision of the North Atlantic Treaty that allows for consultations among alliance members. The situation has heightened tensions in Eastern Europe, with neighboring countries closely monitoring developments.