U.S. and Iranian officials confronted each other at an emergency U.N. Security Council meeting as Washington renewed threats against Tehran despite President Donald Trump signaling possible de-escalation.

The U.S., joined by Iranian dissidents, condemned Iran’s violent crackdown on nationwide protests that activists say killed at least 2,677 people.

U.S. Ambassador Mike Waltz warned that “all options are on the table,” while Iran accused Washington of exploiting human rights claims to justify destabilization and potential military action.

Iranian dissidents gave harrowing testimony about assassination attempts and torture, urging the international community and Trump not to abandon the Iranian people, the AP has reported.

Russia stood alone on the council in defending Iran and criticizing U.S. involvement.