BAGHDAD/WASHINGTON (Reuters) – U.S. President Donald Trump on Saturday threatened to hit 52 Iranian sites “very hard” if Iran attacks Americans or U.S. assets after a drone strike that killed Iranian military commander Qassem Soleimani and an Iraqi militia leader, as tens of thousands of people marched in Iraq to mourn their deaths.

Showing no signs of seeking to ease tensions raised by the strike he ordered that killed Soleimani and Iranian-backed Iraqi militia leader Abu Mahdi al-Muhandis at Baghdad airport on Friday, Trump issued a threat to Iran on Twitter. The strike has raised the specter of wider conflict in the Middle East.

Iran, Trump wrote, “is talking very boldly about targeting certain USA assets” in revenge for Soleimani’s death. Trump said the United States…