France, June 20 -- President Donald Trump said US air strikes on Sunday "totally obliterated" Iran's main nuclear sites, as Washington joined Israel's war with Tehran in a flashpoint moment for the Middle East.

In a televised address to the nation from the White House, Trump warned that the United States would go after more targets if Iran did not make peace quickly.

The intervention by a US president who had vowed to avoid another "forever war" in the region threatens to dramatically widen the conflict, with Iran having said it would retaliate if Washington got involved.

"Tonight, I can report to the world that the strikes were a spectacular military success," said Trump, adding that they targeted the crucial underground nuclear enric...