Who is the current Commander in Chief as of the latest update?

The current Commander in Chief is Joe Biden, who took office on January 20, 2021. As President, he holds the highest authority over the U.S. Armed Forces and is responsible for military decision-making and national defense policy. The role of Commander in Chief is enshrined in the U.S. Constitution, and it is crucial for maintaining the executive branch's ability to respond to national security issues.

In the context of this question, the other individuals mentioned—Barack Obama, Donald Trump, and George W. Bush—have all held the position in the past but are no longer the current Commander in Chief. Each served their terms, with Obama from 2009 to 2017, Trump from 2017 to 2021, and Bush from 2001 to 2009.