Ukraine will get its first new prime minister of the war on Thursday, as President Volodymyr Zelenskiy tries to wrestle wartime defence spending into shape and win over both Donald Trump and a war-weary public with fresh-faced leadership.

President Donald Trump’s ultimatum to Russia to accept a peace deal in Ukraine within 50 days or face bruising sanctions has given the Kremlin extra time to pursue its summer offensive.

New developments Tuesday reinforced the idea that President Donald Trump has significantly shifted his view of the Ukraine war.

The Ukrainian parliament voted to dismiss Prime Minister Denys Shmyhal on Wednesday, lawmakers said, part of a government overhaul aimed at strengthening wartime economic and military management.

This week marked a possible pivot by President Donald Trump regarding Russia's ongoing full-scale invasion of Ukraine.

NATO allies will buy arms, then give them to Ukraine, President Trump said. Patriot air defense systems, missiles and ammunition are among the American-made weapons NATO allies will buy under an arms deal brokered with President Trump to help Ukraine defend itself from Russian attacks.

As President Donald Trump hardens his position toward Moscow and seeks new ways to bring the conflict to an end, he is leaving open the prospect of allowing shipments of longer-range missiles to the country that would allow it to strike deeper into Russia,

On Monday, Trump said that Russia's failure to reach a negotiated settlement with Ukraine within 50 days would lead to his administration imposing a 100% tariff rate on Russian imports as well as what he called "secondary tariffs" on countries that have continued to do business with Moscow.

After years pressing to end U.S. aid to Ukraine, many Republicans have abandoned that position now that President Trump is supporting the country against Russian aggression.

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: