National Guard troops will be heading to Chicago – but President Donald Trump won't say when they will deploy.

After taking federal control of the Washington, D.C. police force last month, Trump believes the takeover should serve as a 'template' for how he will handle violent crime in other major U.S. cities.

He said the next targets are the 'hellholes' of Chicago, Illinois and Baltimore, Maryland.

Chicago, Trump told reporters in the Oval Office on Tuesday, is worse than Afghanistan. And Baltimore, he claimed, is 'one of the most unsafe places anywhere in the world.'

The president said he will send in National Guard troops to crime-ridden U.S. cities because he has 'an obligation to protect this country.'