When Ukrainian President Volodymyr Zelenskyy met with President Donald Trump in Washington, D.C., on Monday, there was much interest in what the visit would signal for the future of the U.S.-Ukraine relations amid Russia’s ongoing invasion.

The two leaders greeted each other, posed for photos in front of the White House and answered questions from reporters in the Oval Office. As cameras captured the leaders’ interactions, the words they spoke weren’t the only part of the story.

Body language experts say Trump’s physical gestures, postures and touch revealed a complicated power dynamic ― one that often put Zelenskyy on the defensive.

Many of Trump’s gestures were a way to assert control and dominance, experts say.

One of the more notable moments for body language experts was when Trump pumped his fist as Zelenskyy arrived at the White House.