Moscow is building a new missile defense complex near a research institute linked to Russian President Vladimir Putin's daughter, in what appears to be the latest effort to bolster the capital's defenses against potential Ukrainian missile attacks.

Russia has deployed an S-400 air defense position less than 10 kilometers from the Kremlin, next to a science center linked to Vladimir Putin’s daughter.

Moscow is building a new missile defense complex near a research institute linked to Russian President Vladimir Putin's daughter, in what appears to be the latest effort to…