Trump is serious this time: Russia has 10 days left to reach a truce.

US President Donald Trump said he would give Russia 10 more days, beginning yesterday, to reach a truce with Ukraine, formally announcing a new deadline intended to put pressure on Putin to end the war. “10 days from today,” Trump told reporters aboard Air Force One on Tuesday as he returned to Washington from a five-day visit to Scotland. Trump on Monday announced that he would shorten the timeline for Putin, with the threat of potential economic penalties on Moscow if it does not move to halt the fighting.

Until yesterday, Trump had not specified the exact deadline or when the clock would start. The newly clarified deadline falls on August 8. “We’re going to put on tariffs and stuff, and I don’t know if it’s going to affect Russia, because he wants to, obviously, probably keep the war going,” Trump said on Tuesday.

Trump earlier this month said he would impose 100% tariffs on Russia if it did not comply with his calls for a truce. His advisers have cast the penalties as likely taking the form of secondary levies that would hit countries that buy Russian exports such as oil.