WASHINGTON (AP) — A military coup in Myanmar and a mass crackdown on dissidents in Russia are presenting early tests for the Biden administration as it tries to reestablish American primacy as a worldwide pro-democracy leader.

Having taken office with a pledge to restore ironclad U.S. support for human rights, freedom of speech and political openness, President Joe Biden is being confronted with two serious challenges in two disparate parts of the world that had either been neglected or the subject of inconsistent messaging during the Trump era.

After investing decades of time, energy and mone...