That included a Monday joint statement from Republican Sen. Lindsey Graham and Democratic Sen. Richard Blumenthal calling Trump’s threat of ramped-up economic penalties if Russia doesn’t cut a peace deal in next 50 days “a real executive hammer to drive the parties to the negotiating table.”

President Donald Trump announced this week that the U.S. will send Patriot air-defense missiles to Ukraine and threatened new tariffs on Russia. Will Vladimir Putin back down? What should Trump's next move be? And what does the future hold for Ukraine? Newsweek contributors Daniel R. DePetris and Dan Perry debate:

Pentagon officials said details were still being worked out, and experts doubted Mr. Trump’s threat of huge tariffs for Russian trading partners.

Donald Trump has again warned Russia that it will face "secondary tariffs" and other sanctions if it does not agree to a ceasefire in Ukraine, but claimed he is "not on anybody's side" in the conflict

Though Trump's decision was welcomed by leaders in Kyiv, Ukrainians and their supporters abroad also raised concerns that the 50-day window may offer Russian President Vladimir Putin an opportunity to intensify his long-range strikes against Ukrainian cities and ongoing summer frontline offensive.

Donald Trump has credited his wife Melania for his recent decision to send weapons to Ukraine, a position he had previously opposed.

While Trump's new Russia policy announcement was welcomed by and large, there are still challenges ahead that will require more from America.

A White House official clarified to CNN that when the president referred to ‘secondary tariffs,’ he meant 100% tariffs on Russia and secondary sanctions on other countries that buy Russian oil,” per CNN’s Kevin Liptak.