Western intelligence sources believe Iran’s recent attacks on Iraqi bases housing U.S. military personnel intentionally sought to avoid American casualties, Haaretz reported on Wednesday.

The attacks were in response to a U.S. strike in Iraq that killed Iranian General Qassem Soleimani.

The goal of the strikes was to send a message of Iranian resolve while preventing the situation from escalating out of control, intelligence officials told the publication. One source, speaking on the condition of anonymity to discuss sensitive information, said early reports indicate that there were no U.S. casualties.

Several countries, including Germany, France, the UK, Turkey and Russia, have called on both the United States and Iran to scale back tensions in the region and refrain from escalating the crisis.

Read the full report.