India, July 14 -- US President Donald Trump on Monday warned Russia that he will impose "very severe" tariffs against Moscow's remaining trade partners if it doesn't end its war in Ukraine within 50 days.

"We're going to be doing secondary tariffs. If we don't have a deal in 50 days, it's very simple. And they'll be at 100 percent, and that's the way it is," Trump told reporters at the White House.

He said he is "we're very, very unhappy" with Russia as he met with NATO chief Mark Rutte in the White House.

"This is billions of dollars worth of military equipment is going to be purchased from the United States, going to NATO... and that's going to be quickly distributed to the battlefield," Trump said.

Rutte, a former Dutch prime minis...