A two-term Democratic governor, Ms. Mills called herself “battle tested” in an interview. But she faces a Democratic primary before she can challenge the Republican incumbent.

Ukraine’s security services said the mayor held Russian citizenship, which is forbidden, but he denied the accusation. Government opponents see it as part of a power grab.

This school year, many Texas districts are teaching from an elementary curriculum that features extensive content about the Christian faith, according to a New York Times analysis.