President Biden moved Thursday to halt former President Donald Trump’s plan to drawdown U.S. forces stationed in Germany, a highly controversial move that was widely seen as a gift to Russian President Vladimir Putin.

The new commander in chief’s decision came amid a day in which he made his first major foreign policy address as president. He and his national security adviser, Jake Sullivan, signaled a tougher stance against Moscow than that carried out by the Trump administration. Biden spoke about putting diplomacy ahead of other aspects of national security and foreign policy but made clear he also will make adjustments to America’s military posture around the world.