The Biden administration has rolled out new sanctions on Iranian officials linked to the widening crackdown on protesters, but is facing pressure to do more from activists who want the regime toppled.
Abdul Hakim al-Shishani, a veteran of the Chechen-Russian war in the 1990s and commander of the Ajnad al-Kavkaz group fighting Syrian government forces in Latakia, arrived in Ukraine with a group of Chechen fighters to battle Russian forces.