The Kremlin is at the heart of Putin's security bubble, but his movements are guarded and obscured.

President Vladimir V. Putin has long operated within the confines of a tight security bubble, which became even tighter and more isolating during the coronavirus pandemic.The sprawling red fortress of the Kremlin, which Russian officials claimed was the target of a Ukrainian drone attack on Wednesday, contains both the president's official residence and his main office, making it the heart of that bubble.

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