President Donald Trump on Wednesday said he hoped to immediately start work on a nuclear deal with Iran and expressed hope the country would “peacefully grow and prosper” the day after he signed an order to impose aggressive measures on Tehran.

Shakeri, an Afghan national living in Iran, told the FBI that a contact in Iran’s paramilitary Revolutionary Guard instructed him last September to set aside other work he was doing and assemble a plan within seven days to surveil and ultimately kill Trump, according to a criminal complaint unsealed in federal court in Manhattan.

The president made the comment during a visit from Israel’s prime minister, and he signed an executive order to intensify a campaign intended to persuade Iran to give up its nuclear program.