Russia has issued an arrest warrant for Yulia Navalnaya, the widow of Alexei Navalny and a leading dissident living in exile, imposing a two-month detention order on grounds that she participated in an “extremist” group.

The warrant was issued in absentia by a Moscow court on Tuesday, five months after Navalny died in a Russian Arctic penal colony. Navalnaya held the Russian president, Vladimir Putin, responsible for her husband’s death.

In Russia, the label “extremist” is routinely applied to dissident or independent civic groups by courts, which typically carry out the wishes of the Kremlin in political cases.

Since Navalny’s death, Navalnaya has lived in an undisclosed location outside Russia with the couple’s two…