President Trump showed his frustration with Russian President Vladimir Putin on Monday, saying he will impose steep “secondary” tariffs on Russia if the Kremlin doesn’t reach a cease-fire deal with Ukraine within 50 days, and announcing he’ll send more U.S. weapons to Kyiv.

Mr. Trump made the announcements after meeting at the White House with NATO Secretary-General Mark Rutte, who has been organizing the proposal to bolster Ukraine’s defenses.

“It’s not my war,” Mr. Trump said in remarks directed at Mr. Putin. “I’m trying to get you out of it, and we want to see it end. And I’m disappointed in President Putin, because I thought we would have had a deal two months ago, but it doesn’t seem to get there.”

“So based on that, we’re going to be doing secondary tariffs,” Mr. Trump said. “If we don’t have a deal in 50 days, it’s very simple, and they’ll be at 100% and that’s the way it is.”

Secondary tariffs are U.S. levies that would be imposed on other countries doing business with Russia, not on Russian exports to the U.S. Mr. Trump has suggested previously that such tariffs could be used on nations buying Russian oil and gas.

“I use trade for a lot of things,” Mr. Trump said of his strategy to bring Russia to the table and agree to a ceasefire. “But it’s great for settling wars.”

The announcement came amid the president’s declaration that the U.S. would send a new weapons supply for Ukraine, including more advanced Patriot missile defense batteries, which NATO member nations are expected to pay for.

“We’ve made a deal today where we are going to be sending them weapons, and they’re going to be paying for them. We, the United States, will not be having any payment made,” Mr. Trump said.  “We’re not buying it, but we will manufacture it, and [NATO] is going to be paying for it.”

Russia has pounded Ukrainian cities, including the capital, Kyiv, with hundreds of drones and cruise and ballistic missiles that Ukraine’s air defenses are struggling to counter. June brought the highest monthly civilian casualties of the past three years, with 232 people killed and 1,343 wounded, the U.N. human rights mission in Ukraine said.

At the same time, Russia’s bigger army is making a new effort to drive back Ukrainian defenders on parts of the 620-mile front line.

Mr. Trump said the European Union will pay the U.S. for the “various pieces of very sophisticated” weaponry.

A senior Russian lawmaker, Konstantin Kosachev, said Mr. Trump’s plan had “only one beneficiary — the US military-industrial complex.”

Germany has offered to finance two Patriot systems, government spokesperson Stefan Kornelius said Monday in Berlin. The country has already given three of its own Patriot systems to Ukraine.

The U.S. contributes heavily to NATO’s budget.

Mr. Rutte said this proposition builds on the “the tremendous success” of last month’s NATO summit, where each member country agreed to pay up to 5% of their GDP for NATO’s defense by 2035, and to keep “Ukraine strong.”

“I’ve been in contact with many countries. I can tell you that this moment Germany, but also Finland and Denmark and Sweden and Norway, the United Kingdom, the Netherlands and Canada,” Mr. Rutte said. “They all want to be part of this. And this is only the first wave. There will be more. So, what we will do is work through the NATO systems to make sure that we know what Ukrainians need so that we can make packages.”

He said the coordinated efforts should get Russia’s attention.

“If I was Vladimir Putin today … speaking about what you were planning to do in 50 days, and this announcement, I would reconsider whether I should not take negotiations about Ukraine more seriously than I was doing at the moment. But when I’m Ukraine, I think this is really great news for them,” he said.

According to Mr. Rutte, the U.S. will maintain the stockpile of weapons and ammunitions for Ukraine. Most weapons packages that Ukraine will receive relies on Europe’s financial resources and inclination to make these purchases.

Kyiv is in need of air defense systems and drone interceptors, as well as a continuous supply of artillery shells and missiles.

Reservations about Mr. Trump’s commitment to supply Ukraine initially arose when the Pentagon paused shipments of weapons over concerns that U.S. stockpiles were running low. But, according to Mr. Rutte, the U.S. will now maintain the stockpile of weapons and ammunition for Ukraine.

Mr. Trump has grown increasingly irritated with Russia’s rejection of a ceasefire with Ukraine since Russia’s full-scale invasion began more than three years ago.

He told reporters on Sunday that he would send the missiles to Ukraine to help fend off Russia’s attacks and condemned Mr. Putin, saying he “talks nice and then he bombs everybody in the evening.”

Mr. Trump’s threat is similar to legislation stated in a Senate bipartisan bill that would impose 500% tariffs on countries that purchase Russian oil and gas. Mr. Trump also pledged earlier this year to tariff imports from countries that buy Venezuelan oil.

Mr. Rutte became head of NATO last Oct. 1, succeeding Jens Stoltenberg. He has known Mr. Trump for many years, and their relationship appears to have evolved positively.

During Mr. Trump’s first term, Mr. Rutte served as the Dutch prime minister and was one of the few European leaders who challenged Mr. Trump publicly, particularly on NATO burden-sharing and trade issues.

But their relationship appears to have notably improved, coming on display during the NATO summit in The Hague last month, when Mr. Trump called Mr. Rutte a “very strong leader and a good man,” and Mr. Rutte later called the U.S. president a “man of strength and peace.”

He even likened him to a global affairs “daddy,” in a perhaps playful comment.

Mr. Rutte last visited the White House on March 13, and during that time, officials appeared optimistic that a 30-day ceasefire could be reached between Ukraine and Russia.

Mr. Trump and Mr. Rutte also met last month during the NATO’s summit in The Hague that led to the alliance-wide agreement to increase defense spending.

The president in recent weeks has used the threat of looming tariffs against other countries to gain leverage in foreign policy negotiations.

Over the weekend, Trump threatened new 30% tariffs against Mexico and the European Union to be implemented Aug. 1, despite ongoing negotiations.

Last week, he also threatened a 35% tariff on many Canadian goods and warned of a 50% levy on Brazil in an attempt to impact the criminal trial against former president Jair Bolsonaro.

— This article is based in part on wire-service reports.

• Kerry Picket can be reached at kpicket@washingtontimes.com.