Thomas lives in Brussels. But last week, seemingly out of the blue, he upped sticks and left. He was already heading into Ukraine when he began sending his first dispatches — simple but captivating voicemails. Thomas is now in the international brigades, which are comprised of foreign fighters from all over the world. Like Thomas, many of the fighters were responding to Ukrainian president Volodymyr Zelensky's call to help his country in its hour of need. And, like Thomas, they now are patrolling Ukrainian streets against Russian incursions, on Europe's new frontline.

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